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/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8168ed2-m [2018-04-11 22:27:41,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 22:27:41,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 22:27:41,745 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 22:27:41,745 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 22:27:41,746 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 22:27:41,747 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 22:27:41,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 22:27:41,751 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 22:27:41,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 22:27:41,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 22:27:41,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 22:27:41,754 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 22:27:41,755 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 22:27:41,756 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 22:27:41,758 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 22:27:41,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 22:27:41,762 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 22:27:41,763 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 22:27:41,765 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 22:27:41,767 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 22:27:41,767 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 22:27:41,768 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 22:27:41,769 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 22:27:41,769 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 22:27:41,771 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 22:27:41,771 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 22:27:41,772 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 22:27:41,772 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 22:27:41,773 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 22:27:41,773 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 22:27:41,774 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 22:27:41,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 22:27:41,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 22:27:41,797 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-11 22:27:41,797 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-11 22:27:41,798 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-11 22:27:41,798 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-11 22:27:41,798 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-11 22:27:41,798 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-11 22:27:41,799 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-11 22:27:41,799 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-11 22:27:41,799 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-11 22:27:41,799 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-11 22:27:41,799 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 22:27:41,799 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 22:27:41,800 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 22:27:41,800 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 22:27:41,800 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 22:27:41,800 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 22:27:41,800 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 22:27:41,800 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-11 22:27:41,800 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 22:27:41,801 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 22:27:41,801 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 22:27:41,801 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-11 22:27:41,801 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-11 22:27:41,801 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 22:27:41,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 22:27:41,802 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 22:27:41,802 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 22:27:41,802 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 22:27:41,802 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-11 22:27:41,802 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-11 22:27:41,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:27:41,803 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-11 22:27:41,803 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-11 22:27:41,803 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-11 22:27:41,804 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-11 22:27:41,804 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-11 22:27:41,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 22:27:41,845 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 22:27:41,848 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 22:27:41,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 22:27:41,849 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 22:27:41,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-04-11 22:27:42,170 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG779ccb6e9 [2018-04-11 22:27:42,302 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 22:27:42,302 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 22:27:42,302 INFO L168 CDTParser]: Scanning ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-04-11 22:27:42,303 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 22:27:42,304 INFO L215 ultiparseSymbolTable]: [2018-04-11 22:27:42,304 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 22:27:42,304 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-04-11 22:27:42,304 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo ('foo') in ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-04-11 22:27:42,304 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 22:27:42,304 INFO L233 ultiparseSymbolTable]: [2018-04-11 22:27:42,319 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG779ccb6e9 [2018-04-11 22:27:42,324 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 22:27:42,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 22:27:42,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 22:27:42,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 22:27:42,332 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 22:27:42,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d599942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42, skipping insertion in model container [2018-04-11 22:27:42,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,349 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 22:27:42,362 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 22:27:42,491 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 22:27:42,515 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 22:27:42,519 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-11 22:27:42,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42 WrapperNode [2018-04-11 22:27:42,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 22:27:42,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 22:27:42,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 22:27:42,528 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 22:27:42,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (1/1) ... [2018-04-11 22:27:42,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 22:27:42,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 22:27:42,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 22:27:42,559 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 22:27:42,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (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 22:27:42,623 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 22:27:42,623 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 22:27:42,624 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo [2018-04-11 22:27:42,624 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 22:27:42,624 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo [2018-04-11 22:27:42,624 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 22:27:42,624 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 22:27:42,624 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 22:27:42,624 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 22:27:42,625 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 22:27:42,625 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 22:27:42,625 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 22:27:42,625 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 22:27:42,895 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 22:27:42,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:27:42 BoogieIcfgContainer [2018-04-11 22:27:42,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 22:27:42,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 22:27:42,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 22:27:42,901 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 22:27:42,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 10:27:42" (1/3) ... [2018-04-11 22:27:42,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fa236c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:27:42, skipping insertion in model container [2018-04-11 22:27:42,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:27:42" (2/3) ... [2018-04-11 22:27:42,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fa236c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:27:42, skipping insertion in model container [2018-04-11 22:27:42,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:27:42" (3/3) ... [2018-04-11 22:27:42,904 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-04-11 22:27:42,914 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 22:27:42,922 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-04-11 22:27:42,970 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 22:27:42,971 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 22:27:42,971 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-11 22:27:42,971 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 22:27:42,971 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 22:27:42,971 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 22:27:42,971 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 22:27:42,971 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 22:27:42,971 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 22:27:42,972 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 22:27:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-04-11 22:27:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-11 22:27:42,990 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:42,990 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:42,990 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:42,994 INFO L82 PathProgramCache]: Analyzing trace with hash 924065095, 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 22:27:43,009 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:43,045 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:43,090 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 22:27:43,090 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:43,106 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 22:27:43,129 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:27:43,129 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-11 22:27:43,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 22:27:43,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 22:27:43,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:27:43,143 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2018-04-11 22:27:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:43,243 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2018-04-11 22:27:43,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 22:27:43,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-04-11 22:27:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:43,253 INFO L225 Difference]: With dead ends: 136 [2018-04-11 22:27:43,254 INFO L226 Difference]: Without dead ends: 80 [2018-04-11 22:27:43,256 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:27:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-04-11 22:27:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 64. [2018-04-11 22:27:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-11 22:27:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2018-04-11 22:27:43,302 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 13 [2018-04-11 22:27:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:43,303 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2018-04-11 22:27:43,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 22:27:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2018-04-11 22:27:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-11 22:27:43,304 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:43,304 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] [2018-04-11 22:27:43,305 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:43,305 INFO L82 PathProgramCache]: Analyzing trace with hash 591861313, 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 22:27:43,316 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:43,337 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:43,344 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 22:27:43,344 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:43,378 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 22:27:43,398 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:27:43,398 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-11 22:27:43,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 22:27:43,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 22:27:43,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:27:43,401 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 4 states. [2018-04-11 22:27:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:43,439 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2018-04-11 22:27:43,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-11 22:27:43,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-04-11 22:27:43,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:43,442 INFO L225 Difference]: With dead ends: 78 [2018-04-11 22:27:43,442 INFO L226 Difference]: Without dead ends: 77 [2018-04-11 22:27:43,443 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 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 22:27:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-11 22:27:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2018-04-11 22:27:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-04-11 22:27:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-04-11 22:27:43,449 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 22 [2018-04-11 22:27:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:43,449 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-04-11 22:27:43,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 22:27:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-04-11 22:27:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-11 22:27:43,450 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:43,450 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] [2018-04-11 22:27:43,450 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:43,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1167831631, 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 22:27:43,463 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:43,483 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:43,508 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 22:27:43,510 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:27:43,512 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:27:43,512 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 22:27:43,527 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 22:27:43,528 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:43,535 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 22:27:43,554 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:27:43,554 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-04-11 22:27:43,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 22:27:43,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 22:27:43,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-11 22:27:43,556 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2018-04-11 22:27:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:43,628 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-04-11 22:27:43,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 22:27:43,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-04-11 22:27:43,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:43,630 INFO L225 Difference]: With dead ends: 67 [2018-04-11 22:27:43,630 INFO L226 Difference]: Without dead ends: 66 [2018-04-11 22:27:43,631 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-11 22:27:43,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-04-11 22:27:43,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-04-11 22:27:43,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-04-11 22:27:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2018-04-11 22:27:43,640 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 23 [2018-04-11 22:27:43,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:43,640 INFO L459 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2018-04-11 22:27:43,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 22:27:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2018-04-11 22:27:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-11 22:27:43,641 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:43,641 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] [2018-04-11 22:27:43,641 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:43,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1167831632, 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 22:27:43,655 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:43,672 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:43,690 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 22:27:43,690 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:27:43,711 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:27:43,711 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:27:43,744 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 22:27:43,744 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:43,840 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 22:27:43,871 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:27:43,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2018-04-11 22:27:43,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-11 22:27:43,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-11 22:27:43,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-04-11 22:27:43,873 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 10 states. [2018-04-11 22:27:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:44,016 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-04-11 22:27:44,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 22:27:44,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-04-11 22:27:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:44,017 INFO L225 Difference]: With dead ends: 75 [2018-04-11 22:27:44,018 INFO L226 Difference]: Without dead ends: 74 [2018-04-11 22:27:44,018 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-04-11 22:27:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-04-11 22:27:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2018-04-11 22:27:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-04-11 22:27:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-04-11 22:27:44,026 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 23 [2018-04-11 22:27:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:44,027 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-04-11 22:27:44,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-11 22:27:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-04-11 22:27:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-11 22:27:44,028 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:44,028 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] [2018-04-11 22:27:44,028 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:44,028 INFO L82 PathProgramCache]: Analyzing trace with hash -572236607, 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 22:27:44,045 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:44,068 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:27:44,160 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:27:44,221 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:27:44,221 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2018-04-11 22:27:44,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-11 22:27:44,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-11 22:27:44,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-04-11 22:27:44,222 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2018-04-11 22:27:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:44,463 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2018-04-11 22:27:44,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 22:27:44,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-04-11 22:27:44,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:44,465 INFO L225 Difference]: With dead ends: 157 [2018-04-11 22:27:44,465 INFO L226 Difference]: Without dead ends: 103 [2018-04-11 22:27:44,466 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-04-11 22:27:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-04-11 22:27:44,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 87. [2018-04-11 22:27:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-04-11 22:27:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2018-04-11 22:27:44,477 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 31 [2018-04-11 22:27:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:44,477 INFO L459 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2018-04-11 22:27:44,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-11 22:27:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2018-04-11 22:27:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-04-11 22:27:44,479 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:44,479 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] [2018-04-11 22:27:44,479 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:44,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1735417043, 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 22:27:44,489 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:44,506 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:27:44,542 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:27:44,619 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:27:44,619 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2018-04-11 22:27:44,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:27:44,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:27:44,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:27:44,621 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 8 states. [2018-04-11 22:27:44,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:44,786 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2018-04-11 22:27:44,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 22:27:44,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-04-11 22:27:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:44,788 INFO L225 Difference]: With dead ends: 164 [2018-04-11 22:27:44,788 INFO L226 Difference]: Without dead ends: 107 [2018-04-11 22:27:44,789 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-04-11 22:27:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-04-11 22:27:44,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2018-04-11 22:27:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-04-11 22:27:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2018-04-11 22:27:44,799 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 33 [2018-04-11 22:27:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:44,799 INFO L459 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2018-04-11 22:27:44,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:27:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2018-04-11 22:27:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-11 22:27:44,800 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:44,800 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, 1, 1, 1, 1, 1] [2018-04-11 22:27:44,800 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:44,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1153304147, 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 22:27:44,806 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:44,820 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 22:27:44,838 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 22:27:44,878 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:27:44,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-11 22:27:44,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 22:27:44,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 22:27:44,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-04-11 22:27:44,880 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 9 states. [2018-04-11 22:27:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:44,964 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2018-04-11 22:27:44,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-11 22:27:44,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2018-04-11 22:27:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:44,965 INFO L225 Difference]: With dead ends: 102 [2018-04-11 22:27:44,965 INFO L226 Difference]: Without dead ends: 101 [2018-04-11 22:27:44,966 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 75 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 22:27:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-04-11 22:27:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2018-04-11 22:27:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-11 22:27:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2018-04-11 22:27:44,975 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 42 [2018-04-11 22:27:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:44,976 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2018-04-11 22:27:44,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 22:27:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2018-04-11 22:27:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-04-11 22:27:44,978 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:44,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:44,978 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:44,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1391967448, 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 22:27:44,984 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:45,005 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 22:27:45,032 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 22:27:45,080 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:45,080 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-04-11 22:27:45,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:27:45,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:27:45,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:27:45,081 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 8 states. [2018-04-11 22:27:45,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:45,149 INFO L93 Difference]: Finished difference Result 134 states and 141 transitions. [2018-04-11 22:27:45,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:27:45,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2018-04-11 22:27:45,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:45,150 INFO L225 Difference]: With dead ends: 134 [2018-04-11 22:27:45,150 INFO L226 Difference]: Without dead ends: 114 [2018-04-11 22:27:45,151 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:27:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-04-11 22:27:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2018-04-11 22:27:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-04-11 22:27:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2018-04-11 22:27:45,157 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 50 [2018-04-11 22:27:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:45,157 INFO L459 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2018-04-11 22:27:45,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:27:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2018-04-11 22:27:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-11 22:27:45,159 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:45,160 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:45,160 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:45,160 INFO L82 PathProgramCache]: Analyzing trace with hash -364733747, now seen corresponding path program 1 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 22:27:45,165 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:45,185 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-04-11 22:27:45,201 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-04-11 22:27:45,251 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:45,251 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-11 22:27:45,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:27:45,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:27:45,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:27:45,251 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand 8 states. [2018-04-11 22:27:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:45,325 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2018-04-11 22:27:45,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:27:45,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2018-04-11 22:27:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:45,327 INFO L225 Difference]: With dead ends: 138 [2018-04-11 22:27:45,327 INFO L226 Difference]: Without dead ends: 137 [2018-04-11 22:27:45,328 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:27:45,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-04-11 22:27:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2018-04-11 22:27:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-04-11 22:27:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 129 transitions. [2018-04-11 22:27:45,336 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 129 transitions. Word has length 60 [2018-04-11 22:27:45,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:45,337 INFO L459 AbstractCegarLoop]: Abstraction has 121 states and 129 transitions. [2018-04-11 22:27:45,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:27:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 129 transitions. [2018-04-11 22:27:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-04-11 22:27:45,338 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:45,339 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:45,339 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:45,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1578155844, now seen corresponding path program 1 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 22:27:45,348 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:45,372 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:45,380 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 22:27:45,381 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:27:45,384 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:27:45,384 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:27:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-04-11 22:27:45,464 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-04-11 22:27:45,568 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:45,568 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-04-11 22:27:45,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-11 22:27:45,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-11 22:27:45,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-04-11 22:27:45,569 INFO L87 Difference]: Start difference. First operand 121 states and 129 transitions. Second operand 15 states. [2018-04-11 22:27:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:45,848 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2018-04-11 22:27:45,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-04-11 22:27:45,848 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2018-04-11 22:27:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:45,849 INFO L225 Difference]: With dead ends: 132 [2018-04-11 22:27:45,850 INFO L226 Difference]: Without dead ends: 131 [2018-04-11 22:27:45,850 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2018-04-11 22:27:45,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-04-11 22:27:45,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 122. [2018-04-11 22:27:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-11 22:27:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2018-04-11 22:27:45,861 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 61 [2018-04-11 22:27:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:45,861 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2018-04-11 22:27:45,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-11 22:27:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2018-04-11 22:27:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-04-11 22:27:45,863 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:45,864 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:45,864 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1868455885, 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 22:27:45,873 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:45,901 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 78 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-04-11 22:27:45,966 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 78 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-04-11 22:27:46,135 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:46,135 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2018-04-11 22:27:46,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-11 22:27:46,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-11 22:27:46,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-04-11 22:27:46,137 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand 17 states. [2018-04-11 22:27:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:46,366 INFO L93 Difference]: Finished difference Result 243 states and 259 transitions. [2018-04-11 22:27:46,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-11 22:27:46,366 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2018-04-11 22:27:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:46,369 INFO L225 Difference]: With dead ends: 243 [2018-04-11 22:27:46,369 INFO L226 Difference]: Without dead ends: 164 [2018-04-11 22:27:46,370 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2018-04-11 22:27:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-04-11 22:27:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 150. [2018-04-11 22:27:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-04-11 22:27:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2018-04-11 22:27:46,379 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 78 [2018-04-11 22:27:46,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:46,380 INFO L459 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2018-04-11 22:27:46,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-11 22:27:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2018-04-11 22:27:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-04-11 22:27:46,381 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:46,381 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:46,381 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:46,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1102801392, now seen corresponding path program 2 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 22:27:46,390 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:46,412 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-04-11 22:27:46,461 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-11 22:27:46,563 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-11 22:27:46,564 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2018-04-11 22:27:46,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 22:27:46,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 22:27:46,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:27:46,565 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand 12 states. [2018-04-11 22:27:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:46,724 INFO L93 Difference]: Finished difference Result 245 states and 258 transitions. [2018-04-11 22:27:46,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-11 22:27:46,724 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2018-04-11 22:27:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:46,725 INFO L225 Difference]: With dead ends: 245 [2018-04-11 22:27:46,725 INFO L226 Difference]: Without dead ends: 160 [2018-04-11 22:27:46,726 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:27:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-04-11 22:27:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2018-04-11 22:27:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-04-11 22:27:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2018-04-11 22:27:46,736 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 90 [2018-04-11 22:27:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:46,736 INFO L459 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2018-04-11 22:27:46,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 22:27:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2018-04-11 22:27:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-04-11 22:27:46,739 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:46,739 INFO L355 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:46,739 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:46,739 INFO L82 PathProgramCache]: Analyzing trace with hash 468973633, 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 22:27:46,752 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:46,792 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-04-11 22:27:46,869 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-04-11 22:27:47,013 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:47,013 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2018-04-11 22:27:47,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-11 22:27:47,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-11 22:27:47,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-04-11 22:27:47,014 INFO L87 Difference]: Start difference. First operand 150 states and 156 transitions. Second operand 14 states. [2018-04-11 22:27:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:47,195 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2018-04-11 22:27:47,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-04-11 22:27:47,196 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 107 [2018-04-11 22:27:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:47,197 INFO L225 Difference]: With dead ends: 245 [2018-04-11 22:27:47,197 INFO L226 Difference]: Without dead ends: 160 [2018-04-11 22:27:47,198 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 197 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2018-04-11 22:27:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-04-11 22:27:47,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2018-04-11 22:27:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-04-11 22:27:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2018-04-11 22:27:47,208 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 107 [2018-04-11 22:27:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:47,209 INFO L459 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2018-04-11 22:27:47,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-11 22:27:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2018-04-11 22:27:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-04-11 22:27:47,210 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:47,210 INFO L355 BasicCegarLoop]: trace histogram [9, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:47,210 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:47,211 INFO L82 PathProgramCache]: Analyzing trace with hash -353185703, now seen corresponding path program 4 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 22:27:47,219 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:47,248 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 152 proven. 18 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-04-11 22:27:47,399 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 152 proven. 18 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-04-11 22:27:47,577 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:47,577 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2018-04-11 22:27:47,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-04-11 22:27:47,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-04-11 22:27:47,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2018-04-11 22:27:47,579 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand 23 states. [2018-04-11 22:27:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:47,959 INFO L93 Difference]: Finished difference Result 276 states and 287 transitions. [2018-04-11 22:27:47,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-11 22:27:47,959 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 116 [2018-04-11 22:27:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:47,960 INFO L225 Difference]: With dead ends: 276 [2018-04-11 22:27:47,961 INFO L226 Difference]: Without dead ends: 205 [2018-04-11 22:27:47,962 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 203 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2018-04-11 22:27:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-04-11 22:27:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2018-04-11 22:27:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-04-11 22:27:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 194 transitions. [2018-04-11 22:27:47,971 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 194 transitions. Word has length 116 [2018-04-11 22:27:47,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:47,972 INFO L459 AbstractCegarLoop]: Abstraction has 189 states and 194 transitions. [2018-04-11 22:27:47,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-04-11 22:27:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 194 transitions. [2018-04-11 22:27:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-04-11 22:27:47,974 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:47,974 INFO L355 BasicCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2018-04-11 22:27:47,974 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:47,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2060478704, now seen corresponding path program 3 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 22:27:47,983 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:48,011 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 120 proven. 13 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-04-11 22:27:48,130 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 120 proven. 13 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-04-11 22:27:48,302 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:48,302 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2018-04-11 22:27:48,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-11 22:27:48,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-11 22:27:48,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-04-11 22:27:48,303 INFO L87 Difference]: Start difference. First operand 189 states and 194 transitions. Second operand 20 states. [2018-04-11 22:27:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:48,549 INFO L93 Difference]: Finished difference Result 280 states and 288 transitions. [2018-04-11 22:27:48,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-11 22:27:48,549 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 126 [2018-04-11 22:27:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:48,550 INFO L225 Difference]: With dead ends: 280 [2018-04-11 22:27:48,550 INFO L226 Difference]: Without dead ends: 203 [2018-04-11 22:27:48,551 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 227 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2018-04-11 22:27:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-04-11 22:27:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 189. [2018-04-11 22:27:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-04-11 22:27:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2018-04-11 22:27:48,562 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 126 [2018-04-11 22:27:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:48,562 INFO L459 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2018-04-11 22:27:48,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-11 22:27:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2018-04-11 22:27:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-04-11 22:27:48,564 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:48,564 INFO L355 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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] [2018-04-11 22:27:48,564 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:48,564 INFO L82 PathProgramCache]: Analyzing trace with hash 445493824, 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 22:27:48,576 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:48,605 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-04-11 22:27:48,652 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-04-11 22:27:48,735 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:48,735 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-11 22:27:48,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:27:48,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:27:48,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:27:48,737 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand 16 states. [2018-04-11 22:27:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:48,869 INFO L93 Difference]: Finished difference Result 257 states and 267 transitions. [2018-04-11 22:27:48,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 22:27:48,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 135 [2018-04-11 22:27:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:48,871 INFO L225 Difference]: With dead ends: 257 [2018-04-11 22:27:48,871 INFO L226 Difference]: Without dead ends: 237 [2018-04-11 22:27:48,871 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-04-11 22:27:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-04-11 22:27:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2018-04-11 22:27:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-04-11 22:27:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 233 transitions. [2018-04-11 22:27:48,883 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 233 transitions. Word has length 135 [2018-04-11 22:27:48,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:48,883 INFO L459 AbstractCegarLoop]: Abstraction has 227 states and 233 transitions. [2018-04-11 22:27:48,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:27:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 233 transitions. [2018-04-11 22:27:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-04-11 22:27:48,886 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:48,886 INFO L355 BasicCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:48,886 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash -208164555, now seen corresponding path program 5 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 22:27:48,892 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:48,932 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 204 proven. 36 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-04-11 22:27:48,966 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 204 proven. 36 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-04-11 22:27:49,076 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:49,076 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-11 22:27:49,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:27:49,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:27:49,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:27:49,077 INFO L87 Difference]: Start difference. First operand 227 states and 233 transitions. Second operand 16 states. [2018-04-11 22:27:49,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:49,440 INFO L93 Difference]: Finished difference Result 284 states and 309 transitions. [2018-04-11 22:27:49,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 22:27:49,441 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 163 [2018-04-11 22:27:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:49,443 INFO L225 Difference]: With dead ends: 284 [2018-04-11 22:27:49,444 INFO L226 Difference]: Without dead ends: 283 [2018-04-11 22:27:49,444 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-04-11 22:27:49,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-04-11 22:27:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 262. [2018-04-11 22:27:49,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-04-11 22:27:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 275 transitions. [2018-04-11 22:27:49,461 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 275 transitions. Word has length 163 [2018-04-11 22:27:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:49,462 INFO L459 AbstractCegarLoop]: Abstraction has 262 states and 275 transitions. [2018-04-11 22:27:49,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:27:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 275 transitions. [2018-04-11 22:27:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-04-11 22:27:49,464 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:49,464 INFO L355 BasicCegarLoop]: trace histogram [13, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:49,464 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:49,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2136833500, now seen corresponding path program 2 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 22:27:49,476 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:49,525 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:49,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 22:27:49,529 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:27:49,538 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:27:49,539 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:27:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 225 proven. 39 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-04-11 22:27:49,877 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 225 proven. 39 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-04-11 22:27:50,099 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:50,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2018-04-11 22:27:50,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-04-11 22:27:50,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-04-11 22:27:50,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-04-11 22:27:50,101 INFO L87 Difference]: Start difference. First operand 262 states and 275 transitions. Second operand 23 states. [2018-04-11 22:27:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:50,749 INFO L93 Difference]: Finished difference Result 276 states and 301 transitions. [2018-04-11 22:27:50,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-04-11 22:27:50,749 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 164 [2018-04-11 22:27:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:50,751 INFO L225 Difference]: With dead ends: 276 [2018-04-11 22:27:50,751 INFO L226 Difference]: Without dead ends: 275 [2018-04-11 22:27:50,751 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 302 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=462, Invalid=1344, Unknown=0, NotChecked=0, Total=1806 [2018-04-11 22:27:50,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-04-11 22:27:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 263. [2018-04-11 22:27:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-04-11 22:27:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 273 transitions. [2018-04-11 22:27:50,762 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 273 transitions. Word has length 164 [2018-04-11 22:27:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:50,762 INFO L459 AbstractCegarLoop]: Abstraction has 263 states and 273 transitions. [2018-04-11 22:27:50,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-04-11 22:27:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 273 transitions. [2018-04-11 22:27:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-04-11 22:27:50,763 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:50,763 INFO L355 BasicCegarLoop]: trace histogram [17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:50,764 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:50,764 INFO L82 PathProgramCache]: Analyzing trace with hash 226942773, now seen corresponding path program 6 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 22:27:50,770 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:50,816 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 639 proven. 42 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-04-11 22:27:51,022 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 639 proven. 42 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-04-11 22:27:51,249 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:51,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 29 [2018-04-11 22:27:51,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-04-11 22:27:51,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-04-11 22:27:51,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2018-04-11 22:27:51,250 INFO L87 Difference]: Start difference. First operand 263 states and 273 transitions. Second operand 29 states. [2018-04-11 22:27:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:51,838 INFO L93 Difference]: Finished difference Result 455 states and 476 transitions. [2018-04-11 22:27:51,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-11 22:27:51,842 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 199 [2018-04-11 22:27:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:51,844 INFO L225 Difference]: With dead ends: 455 [2018-04-11 22:27:51,844 INFO L226 Difference]: Without dead ends: 320 [2018-04-11 22:27:51,845 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 361 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=490, Invalid=2162, Unknown=0, NotChecked=0, Total=2652 [2018-04-11 22:27:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-04-11 22:27:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 309. [2018-04-11 22:27:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-04-11 22:27:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 319 transitions. [2018-04-11 22:27:51,855 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 319 transitions. Word has length 199 [2018-04-11 22:27:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:51,856 INFO L459 AbstractCegarLoop]: Abstraction has 309 states and 319 transitions. [2018-04-11 22:27:51,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-04-11 22:27:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 319 transitions. [2018-04-11 22:27:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-04-11 22:27:51,857 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:51,857 INFO L355 BasicCegarLoop]: trace histogram [21, 17, 16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:51,857 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:51,857 INFO L82 PathProgramCache]: Analyzing trace with hash -780656423, now seen corresponding path program 7 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 22:27:51,873 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:51,928 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 970 proven. 33 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-04-11 22:27:52,704 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 970 proven. 33 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-04-11 22:27:53,021 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:53,021 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2018-04-11 22:27:53,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-04-11 22:27:53,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-04-11 22:27:53,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2018-04-11 22:27:53,023 INFO L87 Difference]: Start difference. First operand 309 states and 319 transitions. Second operand 26 states. [2018-04-11 22:27:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:53,374 INFO L93 Difference]: Finished difference Result 460 states and 480 transitions. [2018-04-11 22:27:53,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-11 22:27:53,374 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 246 [2018-04-11 22:27:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:53,376 INFO L225 Difference]: With dead ends: 460 [2018-04-11 22:27:53,376 INFO L226 Difference]: Without dead ends: 319 [2018-04-11 22:27:53,377 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 459 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=325, Invalid=1397, Unknown=0, NotChecked=0, Total=1722 [2018-04-11 22:27:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-04-11 22:27:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 309. [2018-04-11 22:27:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-04-11 22:27:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 317 transitions. [2018-04-11 22:27:53,391 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 317 transitions. Word has length 246 [2018-04-11 22:27:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:53,392 INFO L459 AbstractCegarLoop]: Abstraction has 309 states and 317 transitions. [2018-04-11 22:27:53,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-04-11 22:27:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 317 transitions. [2018-04-11 22:27:53,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-04-11 22:27:53,394 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:53,394 INFO L355 BasicCegarLoop]: trace histogram [22, 18, 17, 17, 17, 17, 17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:53,395 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:53,395 INFO L82 PathProgramCache]: Analyzing trace with hash -189405503, now seen corresponding path program 8 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 22:27:53,403 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:53,492 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 943 proven. 76 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2018-04-11 22:27:53,827 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 943 proven. 76 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2018-04-11 22:27:54,048 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:54,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 35 [2018-04-11 22:27:54,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-11 22:27:54,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-11 22:27:54,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2018-04-11 22:27:54,049 INFO L87 Difference]: Start difference. First operand 309 states and 317 transitions. Second operand 35 states. [2018-04-11 22:27:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:54,598 INFO L93 Difference]: Finished difference Result 500 states and 517 transitions. [2018-04-11 22:27:54,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-04-11 22:27:54,598 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 255 [2018-04-11 22:27:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:54,600 INFO L225 Difference]: With dead ends: 500 [2018-04-11 22:27:54,600 INFO L226 Difference]: Without dead ends: 375 [2018-04-11 22:27:54,601 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 465 SyntacticMatches, 11 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=3327, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:27:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-04-11 22:27:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364. [2018-04-11 22:27:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-04-11 22:27:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 372 transitions. [2018-04-11 22:27:54,613 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 372 transitions. Word has length 255 [2018-04-11 22:27:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:54,613 INFO L459 AbstractCegarLoop]: Abstraction has 364 states and 372 transitions. [2018-04-11 22:27:54,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-11 22:27:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 372 transitions. [2018-04-11 22:27:54,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-04-11 22:27:54,615 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:54,615 INFO L355 BasicCegarLoop]: trace histogram [27, 22, 21, 21, 21, 21, 21, 21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:54,615 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash 471390797, now seen corresponding path program 9 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 22:27:54,622 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:54,678 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 1593 proven. 62 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2018-04-11 22:27:55,020 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 1593 proven. 62 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2018-04-11 22:27:55,331 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:55,331 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 32 [2018-04-11 22:27:55,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:27:55,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:27:55,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:27:55,333 INFO L87 Difference]: Start difference. First operand 364 states and 372 transitions. Second operand 32 states. [2018-04-11 22:27:55,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:55,802 INFO L93 Difference]: Finished difference Result 505 states and 520 transitions. [2018-04-11 22:27:55,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-04-11 22:27:55,802 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 311 [2018-04-11 22:27:55,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:55,804 INFO L225 Difference]: With dead ends: 505 [2018-04-11 22:27:55,804 INFO L226 Difference]: Without dead ends: 374 [2018-04-11 22:27:55,805 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 581 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=493, Invalid=2263, Unknown=0, NotChecked=0, Total=2756 [2018-04-11 22:27:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-04-11 22:27:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 364. [2018-04-11 22:27:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-04-11 22:27:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 370 transitions. [2018-04-11 22:27:55,815 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 370 transitions. Word has length 311 [2018-04-11 22:27:55,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:55,816 INFO L459 AbstractCegarLoop]: Abstraction has 364 states and 370 transitions. [2018-04-11 22:27:55,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:27:55,816 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 370 transitions. [2018-04-11 22:27:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-04-11 22:27:55,818 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:55,818 INFO L355 BasicCegarLoop]: trace histogram [28, 23, 22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:55,819 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:55,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1646038989, now seen corresponding path program 10 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 22:27:55,828 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:55,893 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2620 backedges. 1304 proven. 120 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2018-04-11 22:27:56,170 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2620 backedges. 1304 proven. 120 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2018-04-11 22:27:56,528 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:56,529 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 41 [2018-04-11 22:27:56,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-04-11 22:27:56,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-04-11 22:27:56,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1402, Unknown=0, NotChecked=0, Total=1640 [2018-04-11 22:27:56,530 INFO L87 Difference]: Start difference. First operand 364 states and 370 transitions. Second operand 41 states. [2018-04-11 22:27:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:57,773 INFO L93 Difference]: Finished difference Result 554 states and 567 transitions. [2018-04-11 22:27:57,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:27:57,774 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 320 [2018-04-11 22:27:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:57,776 INFO L225 Difference]: With dead ends: 554 [2018-04-11 22:27:57,777 INFO L226 Difference]: Without dead ends: 439 [2018-04-11 22:27:57,778 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 587 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=958, Invalid=4742, Unknown=0, NotChecked=0, Total=5700 [2018-04-11 22:27:57,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-04-11 22:27:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2018-04-11 22:27:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-04-11 22:27:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 434 transitions. [2018-04-11 22:27:57,798 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 434 transitions. Word has length 320 [2018-04-11 22:27:57,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:57,798 INFO L459 AbstractCegarLoop]: Abstraction has 428 states and 434 transitions. [2018-04-11 22:27:57,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-04-11 22:27:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 434 transitions. [2018-04-11 22:27:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-04-11 22:27:57,800 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:57,800 INFO L355 BasicCegarLoop]: trace histogram [34, 28, 27, 27, 27, 27, 27, 27, 27, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:57,800 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:57,801 INFO L82 PathProgramCache]: Analyzing trace with hash 747464769, now seen corresponding path program 11 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 22:27:57,818 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:57,901 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:27:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3930 backedges. 2415 proven. 100 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2018-04-11 22:27:58,560 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:27:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3930 backedges. 2415 proven. 100 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2018-04-11 22:27:58,917 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:58,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 38 [2018-04-11 22:27:58,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-04-11 22:27:58,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-04-11 22:27:58,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2018-04-11 22:27:58,918 INFO L87 Difference]: Start difference. First operand 428 states and 434 transitions. Second operand 38 states. [2018-04-11 22:27:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:59,446 INFO L93 Difference]: Finished difference Result 559 states and 569 transitions. [2018-04-11 22:27:59,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-11 22:27:59,446 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 385 [2018-04-11 22:27:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:59,448 INFO L225 Difference]: With dead ends: 559 [2018-04-11 22:27:59,449 INFO L226 Difference]: Without dead ends: 438 [2018-04-11 22:27:59,450 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 721 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=695, Invalid=3337, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:27:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2018-04-11 22:27:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 428. [2018-04-11 22:27:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-04-11 22:27:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 432 transitions. [2018-04-11 22:27:59,463 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 432 transitions. Word has length 385 [2018-04-11 22:27:59,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:59,464 INFO L459 AbstractCegarLoop]: Abstraction has 428 states and 432 transitions. [2018-04-11 22:27:59,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-04-11 22:27:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 432 transitions. [2018-04-11 22:27:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-04-11 22:27:59,467 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:59,467 INFO L355 BasicCegarLoop]: trace histogram [35, 29, 28, 28, 28, 28, 28, 28, 28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:59,467 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:59,468 INFO L82 PathProgramCache]: Analyzing trace with hash -579439527, now seen corresponding path program 12 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 22:27:59,475 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:59,572 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 1722 proven. 174 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2018-04-11 22:28:00,027 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 1722 proven. 174 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2018-04-11 22:28:00,457 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:00,458 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 47 [2018-04-11 22:28:00,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-04-11 22:28:00,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-04-11 22:28:00,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1858, Unknown=0, NotChecked=0, Total=2162 [2018-04-11 22:28:00,459 INFO L87 Difference]: Start difference. First operand 428 states and 432 transitions. Second operand 47 states. [2018-04-11 22:28:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:01,359 INFO L93 Difference]: Finished difference Result 626 states and 637 transitions. [2018-04-11 22:28:01,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-04-11 22:28:01,360 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 394 [2018-04-11 22:28:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:01,362 INFO L225 Difference]: With dead ends: 626 [2018-04-11 22:28:01,362 INFO L226 Difference]: Without dead ends: 519 [2018-04-11 22:28:01,364 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 727 SyntacticMatches, 15 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1249, Invalid=6407, Unknown=0, NotChecked=0, Total=7656 [2018-04-11 22:28:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-04-11 22:28:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 503. [2018-04-11 22:28:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2018-04-11 22:28:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 508 transitions. [2018-04-11 22:28:01,382 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 508 transitions. Word has length 394 [2018-04-11 22:28:01,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:01,383 INFO L459 AbstractCegarLoop]: Abstraction has 503 states and 508 transitions. [2018-04-11 22:28:01,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-04-11 22:28:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 508 transitions. [2018-04-11 22:28:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-04-11 22:28:01,386 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:01,386 INFO L355 BasicCegarLoop]: trace histogram [34, 27, 27, 27, 27, 27, 27, 27, 27, 8, 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] [2018-04-11 22:28:01,386 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:01,387 INFO L82 PathProgramCache]: Analyzing trace with hash -401142544, now seen corresponding path program 5 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 22:28:01,392 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:01,472 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3971 backedges. 1520 proven. 147 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2018-04-11 22:28:01,833 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3971 backedges. 1520 proven. 147 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2018-04-11 22:28:02,280 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:02,280 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 44 [2018-04-11 22:28:02,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-04-11 22:28:02,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-04-11 22:28:02,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1609, Unknown=0, NotChecked=0, Total=1892 [2018-04-11 22:28:02,281 INFO L87 Difference]: Start difference. First operand 503 states and 508 transitions. Second operand 44 states. [2018-04-11 22:28:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:02,888 INFO L93 Difference]: Finished difference Result 630 states and 638 transitions. [2018-04-11 22:28:02,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-11 22:28:02,888 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 404 [2018-04-11 22:28:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:02,891 INFO L225 Difference]: With dead ends: 630 [2018-04-11 22:28:02,891 INFO L226 Difference]: Without dead ends: 517 [2018-04-11 22:28:02,893 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 751 SyntacticMatches, 15 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=931, Invalid=4619, Unknown=0, NotChecked=0, Total=5550 [2018-04-11 22:28:02,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-04-11 22:28:02,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 503. [2018-04-11 22:28:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2018-04-11 22:28:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 506 transitions. [2018-04-11 22:28:02,912 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 506 transitions. Word has length 404 [2018-04-11 22:28:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:02,913 INFO L459 AbstractCegarLoop]: Abstraction has 503 states and 506 transitions. [2018-04-11 22:28:02,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-04-11 22:28:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 506 transitions. [2018-04-11 22:28:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-04-11 22:28:02,916 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:02,917 INFO L355 BasicCegarLoop]: trace histogram [35, 28, 28, 28, 28, 28, 28, 28, 28, 8, 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] [2018-04-11 22:28:02,917 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:02,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1216319040, now seen corresponding path program 6 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 22:28:02,931 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:03,027 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4228 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 4004 trivial. 0 not checked. [2018-04-11 22:28:03,243 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4228 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 4004 trivial. 0 not checked. [2018-04-11 22:28:03,538 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:03,538 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-04-11 22:28:03,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:28:03,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:28:03,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:28:03,539 INFO L87 Difference]: Start difference. First operand 503 states and 506 transitions. Second operand 32 states. [2018-04-11 22:28:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:03,951 INFO L93 Difference]: Finished difference Result 611 states and 629 transitions. [2018-04-11 22:28:03,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:28:03,951 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 413 [2018-04-11 22:28:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:03,953 INFO L225 Difference]: With dead ends: 611 [2018-04-11 22:28:03,953 INFO L226 Difference]: Without dead ends: 591 [2018-04-11 22:28:03,955 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-04-11 22:28:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-04-11 22:28:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2018-04-11 22:28:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-11 22:28:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 591 transitions. [2018-04-11 22:28:03,977 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 591 transitions. Word has length 413 [2018-04-11 22:28:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:03,978 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 591 transitions. [2018-04-11 22:28:03,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:28:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 591 transitions. [2018-04-11 22:28:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-04-11 22:28:03,982 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:03,982 INFO L355 BasicCegarLoop]: trace histogram [43, 36, 35, 35, 35, 35, 35, 35, 35, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:03,982 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:03,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1097286859, now seen corresponding path program 13 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 22:28:03,992 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:04,107 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6447 backedges. 1960 proven. 210 refuted. 0 times theorem prover too weak. 4277 trivial. 0 not checked. [2018-04-11 22:28:04,318 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6447 backedges. 1960 proven. 210 refuted. 0 times theorem prover too weak. 4277 trivial. 0 not checked. [2018-04-11 22:28:04,729 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:04,729 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-11 22:28:04,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:28:04,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:28:04,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:28:04,730 INFO L87 Difference]: Start difference. First operand 581 states and 591 transitions. Second operand 32 states. [2018-04-11 22:28:05,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:05,923 INFO L93 Difference]: Finished difference Result 690 states and 771 transitions. [2018-04-11 22:28:05,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:28:05,924 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 477 [2018-04-11 22:28:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:05,926 INFO L225 Difference]: With dead ends: 690 [2018-04-11 22:28:05,926 INFO L226 Difference]: Without dead ends: 689 [2018-04-11 22:28:05,927 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 929 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 22:28:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2018-04-11 22:28:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 652. [2018-04-11 22:28:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2018-04-11 22:28:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 677 transitions. [2018-04-11 22:28:05,950 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 677 transitions. Word has length 477 [2018-04-11 22:28:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:05,950 INFO L459 AbstractCegarLoop]: Abstraction has 652 states and 677 transitions. [2018-04-11 22:28:05,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:28:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 677 transitions. [2018-04-11 22:28:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-04-11 22:28:05,953 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:05,953 INFO L355 BasicCegarLoop]: trace histogram [43, 36, 36, 35, 35, 35, 35, 35, 35, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:05,953 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:05,953 INFO L82 PathProgramCache]: Analyzing trace with hash 343845852, now seen corresponding path program 3 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 22:28:05,970 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:06,069 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:06,084 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 22:28:06,085 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:28:06,122 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:28:06,122 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:28:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6482 backedges. 2023 proven. 217 refuted. 0 times theorem prover too weak. 4242 trivial. 0 not checked. [2018-04-11 22:28:07,033 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6482 backedges. 2023 proven. 217 refuted. 0 times theorem prover too weak. 4242 trivial. 0 not checked. [2018-04-11 22:28:07,590 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:07,590 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2018-04-11 22:28:07,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-04-11 22:28:07,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-04-11 22:28:07,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2018-04-11 22:28:07,591 INFO L87 Difference]: Start difference. First operand 652 states and 677 transitions. Second operand 39 states. [2018-04-11 22:28:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:09,932 INFO L93 Difference]: Finished difference Result 678 states and 759 transitions. [2018-04-11 22:28:09,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-04-11 22:28:09,933 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 478 [2018-04-11 22:28:09,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:09,935 INFO L225 Difference]: With dead ends: 678 [2018-04-11 22:28:09,935 INFO L226 Difference]: Without dead ends: 677 [2018-04-11 22:28:09,936 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 906 SyntacticMatches, 13 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1574, Invalid=5232, Unknown=0, NotChecked=0, Total=6806 [2018-04-11 22:28:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2018-04-11 22:28:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 653. [2018-04-11 22:28:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2018-04-11 22:28:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 671 transitions. [2018-04-11 22:28:09,954 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 671 transitions. Word has length 478 [2018-04-11 22:28:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:09,954 INFO L459 AbstractCegarLoop]: Abstraction has 653 states and 671 transitions. [2018-04-11 22:28:09,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-04-11 22:28:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 671 transitions. [2018-04-11 22:28:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-04-11 22:28:09,957 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:09,958 INFO L355 BasicCegarLoop]: trace histogram [51, 44, 43, 43, 43, 43, 43, 43, 43, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:09,958 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:09,958 INFO L82 PathProgramCache]: Analyzing trace with hash 181544757, now seen corresponding path program 14 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:09,973 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:10,086 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9355 backedges. 4917 proven. 238 refuted. 0 times theorem prover too weak. 4200 trivial. 0 not checked. [2018-04-11 22:28:10,810 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9355 backedges. 4917 proven. 238 refuted. 0 times theorem prover too weak. 4200 trivial. 0 not checked. [2018-04-11 22:28:11,440 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:11,440 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 53 [2018-04-11 22:28:11,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-04-11 22:28:11,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-04-11 22:28:11,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2378, Unknown=0, NotChecked=0, Total=2756 [2018-04-11 22:28:11,441 INFO L87 Difference]: Start difference. First operand 653 states and 671 transitions. Second operand 53 states. [2018-04-11 22:28:12,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:12,665 INFO L93 Difference]: Finished difference Result 993 states and 1030 transitions. [2018-04-11 22:28:12,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-04-11 22:28:12,666 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 549 [2018-04-11 22:28:12,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:12,668 INFO L225 Difference]: With dead ends: 993 [2018-04-11 22:28:12,668 INFO L226 Difference]: Without dead ends: 746 [2018-04-11 22:28:12,670 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 1029 SyntacticMatches, 17 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1578, Invalid=8322, Unknown=0, NotChecked=0, Total=9900 [2018-04-11 22:28:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2018-04-11 22:28:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 735. [2018-04-11 22:28:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2018-04-11 22:28:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 753 transitions. [2018-04-11 22:28:12,686 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 753 transitions. Word has length 549 [2018-04-11 22:28:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:12,687 INFO L459 AbstractCegarLoop]: Abstraction has 735 states and 753 transitions. [2018-04-11 22:28:12,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-04-11 22:28:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 753 transitions. [2018-04-11 22:28:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-04-11 22:28:12,690 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:12,690 INFO L355 BasicCegarLoop]: trace histogram [59, 51, 50, 50, 50, 50, 50, 50, 50, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:12,690 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:12,691 INFO L82 PathProgramCache]: Analyzing trace with hash 846739161, now seen corresponding path program 15 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:12,700 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:12,824 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12623 backedges. 7412 proven. 203 refuted. 0 times theorem prover too weak. 5008 trivial. 0 not checked. [2018-04-11 22:28:13,343 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12623 backedges. 7412 proven. 203 refuted. 0 times theorem prover too weak. 5008 trivial. 0 not checked. [2018-04-11 22:28:13,949 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:13,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 50 [2018-04-11 22:28:13,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-11 22:28:13,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-11 22:28:13,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2095, Unknown=0, NotChecked=0, Total=2450 [2018-04-11 22:28:13,950 INFO L87 Difference]: Start difference. First operand 735 states and 753 transitions. Second operand 50 states. [2018-04-11 22:28:14,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:14,639 INFO L93 Difference]: Finished difference Result 998 states and 1038 transitions. [2018-04-11 22:28:14,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-04-11 22:28:14,639 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 632 [2018-04-11 22:28:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:14,642 INFO L225 Difference]: With dead ends: 998 [2018-04-11 22:28:14,642 INFO L226 Difference]: Without dead ends: 745 [2018-04-11 22:28:14,646 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1199 SyntacticMatches, 17 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2652 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1201, Invalid=6109, Unknown=0, NotChecked=0, Total=7310 [2018-04-11 22:28:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-04-11 22:28:14,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 735. [2018-04-11 22:28:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2018-04-11 22:28:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 751 transitions. [2018-04-11 22:28:14,670 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 751 transitions. Word has length 632 [2018-04-11 22:28:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:14,671 INFO L459 AbstractCegarLoop]: Abstraction has 735 states and 751 transitions. [2018-04-11 22:28:14,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-11 22:28:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 751 transitions. [2018-04-11 22:28:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2018-04-11 22:28:14,677 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:14,677 INFO L355 BasicCegarLoop]: trace histogram [60, 52, 51, 51, 51, 51, 51, 51, 51, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:14,677 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:14,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1635862335, now seen corresponding path program 16 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:14,690 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:14,863 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13092 backedges. 6113 proven. 312 refuted. 0 times theorem prover too weak. 6667 trivial. 0 not checked. [2018-04-11 22:28:15,488 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13092 backedges. 6113 proven. 312 refuted. 0 times theorem prover too weak. 6667 trivial. 0 not checked. [2018-04-11 22:28:16,130 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:16,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 59 [2018-04-11 22:28:16,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-04-11 22:28:16,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-04-11 22:28:16,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=2962, Unknown=0, NotChecked=0, Total=3422 [2018-04-11 22:28:16,131 INFO L87 Difference]: Start difference. First operand 735 states and 751 transitions. Second operand 59 states. [2018-04-11 22:28:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:17,580 INFO L93 Difference]: Finished difference Result 1074 states and 1107 transitions. [2018-04-11 22:28:17,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-04-11 22:28:17,580 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 641 [2018-04-11 22:28:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:17,584 INFO L225 Difference]: With dead ends: 1074 [2018-04-11 22:28:17,584 INFO L226 Difference]: Without dead ends: 837 [2018-04-11 22:28:17,587 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1205 SyntacticMatches, 19 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3180 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1945, Invalid=10487, Unknown=0, NotChecked=0, Total=12432 [2018-04-11 22:28:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2018-04-11 22:28:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 826. [2018-04-11 22:28:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2018-04-11 22:28:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 842 transitions. [2018-04-11 22:28:17,614 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 842 transitions. Word has length 641 [2018-04-11 22:28:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:17,615 INFO L459 AbstractCegarLoop]: Abstraction has 826 states and 842 transitions. [2018-04-11 22:28:17,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-04-11 22:28:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 842 transitions. [2018-04-11 22:28:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2018-04-11 22:28:17,622 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:17,622 INFO L355 BasicCegarLoop]: trace histogram [69, 60, 59, 59, 59, 59, 59, 59, 59, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:17,622 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:17,623 INFO L82 PathProgramCache]: Analyzing trace with hash -2126094259, now seen corresponding path program 17 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:17,631 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:17,768 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17457 backedges. 9657 proven. 268 refuted. 0 times theorem prover too weak. 7532 trivial. 0 not checked. [2018-04-11 22:28:18,329 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 17457 backedges. 9657 proven. 268 refuted. 0 times theorem prover too weak. 7532 trivial. 0 not checked. [2018-04-11 22:28:19,055 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:19,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 56 [2018-04-11 22:28:19,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-04-11 22:28:19,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-04-11 22:28:19,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=2645, Unknown=0, NotChecked=0, Total=3080 [2018-04-11 22:28:19,057 INFO L87 Difference]: Start difference. First operand 826 states and 842 transitions. Second operand 56 states. [2018-04-11 22:28:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:19,951 INFO L93 Difference]: Finished difference Result 1079 states and 1114 transitions. [2018-04-11 22:28:19,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-04-11 22:28:19,951 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 733 [2018-04-11 22:28:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:19,953 INFO L225 Difference]: With dead ends: 1079 [2018-04-11 22:28:19,953 INFO L226 Difference]: Without dead ends: 836 [2018-04-11 22:28:19,956 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1507 GetRequests, 1393 SyntacticMatches, 19 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3443 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1505, Invalid=7807, Unknown=0, NotChecked=0, Total=9312 [2018-04-11 22:28:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2018-04-11 22:28:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 826. [2018-04-11 22:28:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2018-04-11 22:28:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 840 transitions. [2018-04-11 22:28:19,975 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 840 transitions. Word has length 733 [2018-04-11 22:28:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:19,975 INFO L459 AbstractCegarLoop]: Abstraction has 826 states and 840 transitions. [2018-04-11 22:28:19,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-04-11 22:28:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 840 transitions. [2018-04-11 22:28:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-04-11 22:28:19,982 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:19,982 INFO L355 BasicCegarLoop]: trace histogram [70, 61, 60, 60, 60, 60, 60, 60, 60, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:19,982 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:19,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1948913203, now seen corresponding path program 18 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:19,991 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:20,118 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18009 backedges. 7438 proven. 396 refuted. 0 times theorem prover too weak. 10175 trivial. 0 not checked. [2018-04-11 22:28:20,781 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18009 backedges. 7438 proven. 396 refuted. 0 times theorem prover too weak. 10175 trivial. 0 not checked. [2018-04-11 22:28:21,543 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:21,544 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 65 [2018-04-11 22:28:21,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-11 22:28:21,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-11 22:28:21,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=3610, Unknown=0, NotChecked=0, Total=4160 [2018-04-11 22:28:21,545 INFO L87 Difference]: Start difference. First operand 826 states and 840 transitions. Second operand 65 states. [2018-04-11 22:28:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:23,251 INFO L93 Difference]: Finished difference Result 1164 states and 1193 transitions. [2018-04-11 22:28:23,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-04-11 22:28:23,286 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 742 [2018-04-11 22:28:23,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:23,289 INFO L225 Difference]: With dead ends: 1164 [2018-04-11 22:28:23,289 INFO L226 Difference]: Without dead ends: 937 [2018-04-11 22:28:23,291 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1399 SyntacticMatches, 21 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3959 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2350, Invalid=12902, Unknown=0, NotChecked=0, Total=15252 [2018-04-11 22:28:23,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2018-04-11 22:28:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 926. [2018-04-11 22:28:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-04-11 22:28:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 940 transitions. [2018-04-11 22:28:23,319 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 940 transitions. Word has length 742 [2018-04-11 22:28:23,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:23,320 INFO L459 AbstractCegarLoop]: Abstraction has 926 states and 940 transitions. [2018-04-11 22:28:23,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-11 22:28:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 940 transitions. [2018-04-11 22:28:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2018-04-11 22:28:23,327 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:23,328 INFO L355 BasicCegarLoop]: trace histogram [80, 70, 69, 69, 69, 69, 69, 69, 69, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:23,328 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1955590079, now seen corresponding path program 19 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:23,337 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:23,486 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 23711 backedges. 12281 proven. 342 refuted. 0 times theorem prover too weak. 11088 trivial. 0 not checked. [2018-04-11 22:28:24,174 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 23711 backedges. 12281 proven. 342 refuted. 0 times theorem prover too weak. 11088 trivial. 0 not checked. [2018-04-11 22:28:25,055 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:25,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 62 [2018-04-11 22:28:25,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-04-11 22:28:25,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-04-11 22:28:25,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=3259, Unknown=0, NotChecked=0, Total=3782 [2018-04-11 22:28:25,057 INFO L87 Difference]: Start difference. First operand 926 states and 940 transitions. Second operand 62 states. [2018-04-11 22:28:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:26,092 INFO L93 Difference]: Finished difference Result 1169 states and 1199 transitions. [2018-04-11 22:28:26,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-04-11 22:28:26,092 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 843 [2018-04-11 22:28:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:26,094 INFO L225 Difference]: With dead ends: 1169 [2018-04-11 22:28:26,094 INFO L226 Difference]: Without dead ends: 936 [2018-04-11 22:28:26,096 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1732 GetRequests, 1605 SyntacticMatches, 21 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4337 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1843, Invalid=9713, Unknown=0, NotChecked=0, Total=11556 [2018-04-11 22:28:26,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2018-04-11 22:28:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 926. [2018-04-11 22:28:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-04-11 22:28:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 938 transitions. [2018-04-11 22:28:26,115 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 938 transitions. Word has length 843 [2018-04-11 22:28:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:26,116 INFO L459 AbstractCegarLoop]: Abstraction has 926 states and 938 transitions. [2018-04-11 22:28:26,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-04-11 22:28:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 938 transitions. [2018-04-11 22:28:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2018-04-11 22:28:26,120 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:26,121 INFO L355 BasicCegarLoop]: trace histogram [81, 71, 70, 70, 70, 70, 70, 70, 70, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:26,121 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:26,121 INFO L82 PathProgramCache]: Analyzing trace with hash -366939047, now seen corresponding path program 20 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:26,127 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:26,269 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 24355 backedges. 8892 proven. 490 refuted. 0 times theorem prover too weak. 14973 trivial. 0 not checked. [2018-04-11 22:28:27,066 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 24355 backedges. 8892 proven. 490 refuted. 0 times theorem prover too weak. 14973 trivial. 0 not checked. [2018-04-11 22:28:28,004 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:28,005 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 71 [2018-04-11 22:28:28,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-04-11 22:28:28,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-04-11 22:28:28,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=648, Invalid=4322, Unknown=0, NotChecked=0, Total=4970 [2018-04-11 22:28:28,006 INFO L87 Difference]: Start difference. First operand 926 states and 938 transitions. Second operand 71 states. [2018-04-11 22:28:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:29,824 INFO L93 Difference]: Finished difference Result 1263 states and 1288 transitions. [2018-04-11 22:28:29,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-04-11 22:28:29,824 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 852 [2018-04-11 22:28:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:29,827 INFO L225 Difference]: With dead ends: 1263 [2018-04-11 22:28:29,827 INFO L226 Difference]: Without dead ends: 1046 [2018-04-11 22:28:29,828 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1611 SyntacticMatches, 23 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2793, Invalid=15567, Unknown=0, NotChecked=0, Total=18360 [2018-04-11 22:28:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2018-04-11 22:28:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1035. [2018-04-11 22:28:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2018-04-11 22:28:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1047 transitions. [2018-04-11 22:28:29,848 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1047 transitions. Word has length 852 [2018-04-11 22:28:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:29,849 INFO L459 AbstractCegarLoop]: Abstraction has 1035 states and 1047 transitions. [2018-04-11 22:28:29,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-04-11 22:28:29,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1047 transitions. [2018-04-11 22:28:29,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2018-04-11 22:28:29,854 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:29,854 INFO L355 BasicCegarLoop]: trace histogram [92, 81, 80, 80, 80, 80, 80, 80, 80, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:29,855 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash 454230501, now seen corresponding path program 21 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:29,860 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:30,015 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 31661 backedges. 15311 proven. 425 refuted. 0 times theorem prover too weak. 15925 trivial. 0 not checked. [2018-04-11 22:28:30,880 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 31661 backedges. 15311 proven. 425 refuted. 0 times theorem prover too weak. 15925 trivial. 0 not checked. [2018-04-11 22:28:31,934 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:31,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 68 [2018-04-11 22:28:31,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-11 22:28:31,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-11 22:28:31,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=619, Invalid=3937, Unknown=0, NotChecked=0, Total=4556 [2018-04-11 22:28:31,936 INFO L87 Difference]: Start difference. First operand 1035 states and 1047 transitions. Second operand 68 states. [2018-04-11 22:28:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:33,008 INFO L93 Difference]: Finished difference Result 1268 states and 1293 transitions. [2018-04-11 22:28:33,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-04-11 22:28:33,008 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 962 [2018-04-11 22:28:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:33,011 INFO L225 Difference]: With dead ends: 1268 [2018-04-11 22:28:33,011 INFO L226 Difference]: Without dead ends: 1045 [2018-04-11 22:28:33,012 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1975 GetRequests, 1835 SyntacticMatches, 23 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5334 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2215, Invalid=11827, Unknown=0, NotChecked=0, Total=14042 [2018-04-11 22:28:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2018-04-11 22:28:33,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1035. [2018-04-11 22:28:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2018-04-11 22:28:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1045 transitions. [2018-04-11 22:28:33,031 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1045 transitions. Word has length 962 [2018-04-11 22:28:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:33,032 INFO L459 AbstractCegarLoop]: Abstraction has 1035 states and 1045 transitions. [2018-04-11 22:28:33,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-11 22:28:33,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1045 transitions. [2018-04-11 22:28:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2018-04-11 22:28:33,040 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:33,041 INFO L355 BasicCegarLoop]: trace histogram [93, 82, 81, 81, 81, 81, 81, 81, 81, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:33,041 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:33,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1934203701, now seen corresponding path program 22 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:33,049 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:33,203 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 32406 backedges. 10475 proven. 594 refuted. 0 times theorem prover too weak. 21337 trivial. 0 not checked. [2018-04-11 22:28:34,149 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 32406 backedges. 10475 proven. 594 refuted. 0 times theorem prover too weak. 21337 trivial. 0 not checked. [2018-04-11 22:28:35,223 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:35,224 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 77 [2018-04-11 22:28:35,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-04-11 22:28:35,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-04-11 22:28:35,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=5098, Unknown=0, NotChecked=0, Total=5852 [2018-04-11 22:28:35,225 INFO L87 Difference]: Start difference. First operand 1035 states and 1045 transitions. Second operand 77 states. [2018-04-11 22:28:37,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:37,157 INFO L93 Difference]: Finished difference Result 1371 states and 1392 transitions. [2018-04-11 22:28:37,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-04-11 22:28:37,157 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 971 [2018-04-11 22:28:37,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:37,160 INFO L225 Difference]: With dead ends: 1371 [2018-04-11 22:28:37,160 INFO L226 Difference]: Without dead ends: 1164 [2018-04-11 22:28:37,162 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2012 GetRequests, 1841 SyntacticMatches, 25 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5772 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3274, Invalid=18482, Unknown=0, NotChecked=0, Total=21756 [2018-04-11 22:28:37,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2018-04-11 22:28:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1153. [2018-04-11 22:28:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-04-11 22:28:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1163 transitions. [2018-04-11 22:28:37,183 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1163 transitions. Word has length 971 [2018-04-11 22:28:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:37,184 INFO L459 AbstractCegarLoop]: Abstraction has 1153 states and 1163 transitions. [2018-04-11 22:28:37,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-04-11 22:28:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1163 transitions. [2018-04-11 22:28:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2018-04-11 22:28:37,191 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:37,191 INFO L355 BasicCegarLoop]: trace histogram [105, 93, 92, 92, 92, 92, 92, 92, 92, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:37,191 INFO L408 AbstractCegarLoop]: === Iteration 39 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1993454375, now seen corresponding path program 23 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:37,207 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:37,413 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 41610 backedges. 18774 proven. 517 refuted. 0 times theorem prover too weak. 22319 trivial. 0 not checked. [2018-04-11 22:28:38,409 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 41610 backedges. 18774 proven. 517 refuted. 0 times theorem prover too weak. 22319 trivial. 0 not checked. [2018-04-11 22:28:39,659 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:39,659 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 74 [2018-04-11 22:28:39,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-04-11 22:28:39,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-04-11 22:28:39,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=723, Invalid=4679, Unknown=0, NotChecked=0, Total=5402 [2018-04-11 22:28:39,661 INFO L87 Difference]: Start difference. First operand 1153 states and 1163 transitions. Second operand 74 states. [2018-04-11 22:28:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:40,868 INFO L93 Difference]: Finished difference Result 1376 states and 1396 transitions. [2018-04-11 22:28:40,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-04-11 22:28:40,868 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 1090 [2018-04-11 22:28:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:40,871 INFO L225 Difference]: With dead ends: 1376 [2018-04-11 22:28:40,871 INFO L226 Difference]: Without dead ends: 1163 [2018-04-11 22:28:40,872 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2236 GetRequests, 2083 SyntacticMatches, 25 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6434 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2621, Invalid=14149, Unknown=0, NotChecked=0, Total=16770 [2018-04-11 22:28:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2018-04-11 22:28:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1153. [2018-04-11 22:28:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-04-11 22:28:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1161 transitions. [2018-04-11 22:28:40,893 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1161 transitions. Word has length 1090 [2018-04-11 22:28:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:40,893 INFO L459 AbstractCegarLoop]: Abstraction has 1153 states and 1161 transitions. [2018-04-11 22:28:40,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-04-11 22:28:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1161 transitions. [2018-04-11 22:28:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2018-04-11 22:28:40,900 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:40,900 INFO L355 BasicCegarLoop]: trace histogram [106, 94, 93, 93, 93, 93, 93, 93, 93, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:40,900 INFO L408 AbstractCegarLoop]: === Iteration 40 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:40,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1002347839, now seen corresponding path program 24 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:40,906 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:41,083 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 42465 backedges. 12187 proven. 708 refuted. 0 times theorem prover too weak. 29570 trivial. 0 not checked. [2018-04-11 22:28:42,216 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 42465 backedges. 12187 proven. 708 refuted. 0 times theorem prover too weak. 29570 trivial. 0 not checked. [2018-04-11 22:28:43,571 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:43,571 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 83 [2018-04-11 22:28:43,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-04-11 22:28:43,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-04-11 22:28:43,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=868, Invalid=5938, Unknown=0, NotChecked=0, Total=6806 [2018-04-11 22:28:43,573 INFO L87 Difference]: Start difference. First operand 1153 states and 1161 transitions. Second operand 83 states. [2018-04-11 22:28:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:46,144 INFO L93 Difference]: Finished difference Result 1488 states and 1505 transitions. [2018-04-11 22:28:46,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-04-11 22:28:46,144 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 1099 [2018-04-11 22:28:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:46,147 INFO L225 Difference]: With dead ends: 1488 [2018-04-11 22:28:46,148 INFO L226 Difference]: Without dead ends: 1291 [2018-04-11 22:28:46,149 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2274 GetRequests, 2089 SyntacticMatches, 27 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6806 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3793, Invalid=21647, Unknown=0, NotChecked=0, Total=25440 [2018-04-11 22:28:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2018-04-11 22:28:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1280. [2018-04-11 22:28:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2018-04-11 22:28:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1288 transitions. [2018-04-11 22:28:46,172 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1288 transitions. Word has length 1099 [2018-04-11 22:28:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:46,172 INFO L459 AbstractCegarLoop]: Abstraction has 1280 states and 1288 transitions. [2018-04-11 22:28:46,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-04-11 22:28:46,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1288 transitions. [2018-04-11 22:28:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1228 [2018-04-11 22:28:46,180 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:46,180 INFO L355 BasicCegarLoop]: trace histogram [119, 106, 105, 105, 105, 105, 105, 105, 105, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:46,180 INFO L408 AbstractCegarLoop]: === Iteration 41 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:46,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1640732083, now seen corresponding path program 25 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:46,187 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:46,388 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 53888 backedges. 22697 proven. 618 refuted. 0 times theorem prover too weak. 30573 trivial. 0 not checked. [2018-04-11 22:28:47,654 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 53888 backedges. 22697 proven. 618 refuted. 0 times theorem prover too weak. 30573 trivial. 0 not checked. [2018-04-11 22:28:49,162 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:49,163 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 80 [2018-04-11 22:28:49,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-04-11 22:28:49,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-04-11 22:28:49,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=5485, Unknown=0, NotChecked=0, Total=6320 [2018-04-11 22:28:49,164 INFO L87 Difference]: Start difference. First operand 1280 states and 1288 transitions. Second operand 80 states. [2018-04-11 22:28:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:50,894 INFO L93 Difference]: Finished difference Result 1493 states and 1508 transitions. [2018-04-11 22:28:50,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-04-11 22:28:50,894 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 1227 [2018-04-11 22:28:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:50,897 INFO L225 Difference]: With dead ends: 1493 [2018-04-11 22:28:50,897 INFO L226 Difference]: Without dead ends: 1290 [2018-04-11 22:28:50,898 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2515 GetRequests, 2349 SyntacticMatches, 27 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7637 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3061, Invalid=16679, Unknown=0, NotChecked=0, Total=19740 [2018-04-11 22:28:50,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2018-04-11 22:28:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1280. [2018-04-11 22:28:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2018-04-11 22:28:50,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1286 transitions. [2018-04-11 22:28:50,920 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1286 transitions. Word has length 1227 [2018-04-11 22:28:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:50,921 INFO L459 AbstractCegarLoop]: Abstraction has 1280 states and 1286 transitions. [2018-04-11 22:28:50,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-04-11 22:28:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1286 transitions. [2018-04-11 22:28:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1237 [2018-04-11 22:28:50,929 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:50,929 INFO L355 BasicCegarLoop]: trace histogram [120, 107, 106, 106, 106, 106, 106, 106, 106, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:50,929 INFO L408 AbstractCegarLoop]: === Iteration 42 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:50,929 INFO L82 PathProgramCache]: Analyzing trace with hash -116185139, now seen corresponding path program 26 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:50,935 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:51,138 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 54862 backedges. 14028 proven. 832 refuted. 0 times theorem prover too weak. 40002 trivial. 0 not checked. [2018-04-11 22:28:52,468 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:28:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 54862 backedges. 14028 proven. 832 refuted. 0 times theorem prover too weak. 40002 trivial. 0 not checked. [2018-04-11 22:28:54,014 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:28:54,014 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 89 [2018-04-11 22:28:54,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-04-11 22:28:54,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-04-11 22:28:54,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=6842, Unknown=0, NotChecked=0, Total=7832 [2018-04-11 22:28:54,016 INFO L87 Difference]: Start difference. First operand 1280 states and 1286 transitions. Second operand 89 states. [2018-04-11 22:28:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:28:56,570 INFO L93 Difference]: Finished difference Result 1614 states and 1627 transitions. [2018-04-11 22:28:56,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-04-11 22:28:56,571 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 1236 [2018-04-11 22:28:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:28:56,574 INFO L225 Difference]: With dead ends: 1614 [2018-04-11 22:28:56,574 INFO L226 Difference]: Without dead ends: 1427 [2018-04-11 22:28:56,576 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2554 GetRequests, 2355 SyntacticMatches, 29 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7925 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4350, Invalid=25062, Unknown=0, NotChecked=0, Total=29412 [2018-04-11 22:28:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2018-04-11 22:28:56,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1416. [2018-04-11 22:28:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1416 states. [2018-04-11 22:28:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1422 transitions. [2018-04-11 22:28:56,601 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1422 transitions. Word has length 1236 [2018-04-11 22:28:56,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:28:56,601 INFO L459 AbstractCegarLoop]: Abstraction has 1416 states and 1422 transitions. [2018-04-11 22:28:56,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-04-11 22:28:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1422 transitions. [2018-04-11 22:28:56,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1374 [2018-04-11 22:28:56,611 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:28:56,611 INFO L355 BasicCegarLoop]: trace histogram [134, 120, 119, 119, 119, 119, 119, 119, 119, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:28:56,611 INFO L408 AbstractCegarLoop]: === Iteration 43 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:28:56,612 INFO L82 PathProgramCache]: Analyzing trace with hash -823848895, now seen corresponding path program 27 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:28:56,630 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:28:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:28:56,851 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:28:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 68852 backedges. 27107 proven. 728 refuted. 0 times theorem prover too weak. 41017 trivial. 0 not checked. [2018-04-11 22:28:58,307 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:29:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 68852 backedges. 27107 proven. 728 refuted. 0 times theorem prover too weak. 41017 trivial. 0 not checked. [2018-04-11 22:29:00,109 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:29:00,110 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 86 [2018-04-11 22:29:00,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-04-11 22:29:00,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-04-11 22:29:00,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=955, Invalid=6355, Unknown=0, NotChecked=0, Total=7310 [2018-04-11 22:29:00,111 INFO L87 Difference]: Start difference. First operand 1416 states and 1422 transitions. Second operand 86 states. [2018-04-11 22:29:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:29:01,996 INFO L93 Difference]: Finished difference Result 1619 states and 1629 transitions. [2018-04-11 22:29:01,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-04-11 22:29:01,996 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 1373 [2018-04-11 22:29:01,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:29:02,000 INFO L225 Difference]: With dead ends: 1619 [2018-04-11 22:29:02,000 INFO L226 Difference]: Without dead ends: 1426 [2018-04-11 22:29:02,002 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2812 GetRequests, 2633 SyntacticMatches, 29 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8943 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3535, Invalid=19417, Unknown=0, NotChecked=0, Total=22952 [2018-04-11 22:29:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2018-04-11 22:29:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1416. [2018-04-11 22:29:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1416 states. [2018-04-11 22:29:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1420 transitions. [2018-04-11 22:29:02,034 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1420 transitions. Word has length 1373 [2018-04-11 22:29:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:29:02,035 INFO L459 AbstractCegarLoop]: Abstraction has 1416 states and 1420 transitions. [2018-04-11 22:29:02,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-04-11 22:29:02,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1420 transitions. [2018-04-11 22:29:02,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1383 [2018-04-11 22:29:02,044 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:29:02,045 INFO L355 BasicCegarLoop]: trace histogram [135, 121, 120, 120, 120, 120, 120, 120, 120, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:29:02,045 INFO L408 AbstractCegarLoop]: === Iteration 44 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:29:02,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1169427367, now seen corresponding path program 28 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:29:02,051 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:29:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:29:02,271 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:29:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 69954 backedges. 15998 proven. 966 refuted. 0 times theorem prover too weak. 52990 trivial. 0 not checked. [2018-04-11 22:29:03,858 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:29:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 69954 backedges. 15998 proven. 966 refuted. 0 times theorem prover too weak. 52990 trivial. 0 not checked. [2018-04-11 22:29:05,744 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:29:05,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 95 [2018-04-11 22:29:05,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-04-11 22:29:05,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-04-11 22:29:05,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1120, Invalid=7810, Unknown=0, NotChecked=0, Total=8930 [2018-04-11 22:29:05,746 INFO L87 Difference]: Start difference. First operand 1416 states and 1420 transitions. Second operand 95 states. [2018-04-11 22:29:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:29:08,745 INFO L93 Difference]: Finished difference Result 1758 states and 1769 transitions. [2018-04-11 22:29:08,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-04-11 22:29:08,745 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 1382 [2018-04-11 22:29:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:29:08,749 INFO L225 Difference]: With dead ends: 1758 [2018-04-11 22:29:08,749 INFO L226 Difference]: Without dead ends: 1579 [2018-04-11 22:29:08,751 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2852 GetRequests, 2639 SyntacticMatches, 31 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9129 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4945, Invalid=28727, Unknown=0, NotChecked=0, Total=33672 [2018-04-11 22:29:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2018-04-11 22:29:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1563. [2018-04-11 22:29:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2018-04-11 22:29:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1568 transitions. [2018-04-11 22:29:08,779 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1568 transitions. Word has length 1382 [2018-04-11 22:29:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:29:08,779 INFO L459 AbstractCegarLoop]: Abstraction has 1563 states and 1568 transitions. [2018-04-11 22:29:08,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-04-11 22:29:08,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1568 transitions. [2018-04-11 22:29:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1393 [2018-04-11 22:29:08,789 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:29:08,790 INFO L355 BasicCegarLoop]: trace histogram [134, 119, 119, 119, 119, 119, 119, 119, 119, 16, 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] [2018-04-11 22:29:08,790 INFO L408 AbstractCegarLoop]: === Iteration 45 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:29:08,790 INFO L82 PathProgramCache]: Analyzing trace with hash -670266128, now seen corresponding path program 7 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:29:08,795 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:29:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:29:09,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:29:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 68889 backedges. 15024 proven. 847 refuted. 0 times theorem prover too weak. 53018 trivial. 0 not checked. [2018-04-11 22:29:10,601 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:29:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 68889 backedges. 15024 proven. 847 refuted. 0 times theorem prover too weak. 53018 trivial. 0 not checked. [2018-04-11 22:29:12,468 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:29:12,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 92 [2018-04-11 22:29:12,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-04-11 22:29:12,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-04-11 22:29:12,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=7289, Unknown=0, NotChecked=0, Total=8372 [2018-04-11 22:29:12,470 INFO L87 Difference]: Start difference. First operand 1563 states and 1568 transitions. Second operand 92 states. [2018-04-11 22:29:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:29:14,085 INFO L93 Difference]: Finished difference Result 1762 states and 1770 transitions. [2018-04-11 22:29:14,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-04-11 22:29:14,085 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 1392 [2018-04-11 22:29:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:29:14,090 INFO L225 Difference]: With dead ends: 1762 [2018-04-11 22:29:14,090 INFO L226 Difference]: Without dead ends: 1577 [2018-04-11 22:29:14,092 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2855 GetRequests, 2663 SyntacticMatches, 31 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10352 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4043, Invalid=22363, Unknown=0, NotChecked=0, Total=26406 [2018-04-11 22:29:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2018-04-11 22:29:14,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1563. [2018-04-11 22:29:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2018-04-11 22:29:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1566 transitions. [2018-04-11 22:29:14,138 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1566 transitions. Word has length 1392 [2018-04-11 22:29:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:29:14,139 INFO L459 AbstractCegarLoop]: Abstraction has 1563 states and 1566 transitions. [2018-04-11 22:29:14,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-04-11 22:29:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1566 transitions. [2018-04-11 22:29:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2018-04-11 22:29:14,167 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:29:14,167 INFO L355 BasicCegarLoop]: trace histogram [135, 120, 120, 120, 120, 120, 120, 120, 120, 16, 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] [2018-04-11 22:29:14,167 INFO L408 AbstractCegarLoop]: === Iteration 46 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:29:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash 884608576, now seen corresponding path program 8 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:29:14,173 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:29:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:29:14,406 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:29:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 69990 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 68910 trivial. 0 not checked. [2018-04-11 22:29:15,203 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:29:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 69990 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 68910 trivial. 0 not checked. [2018-04-11 22:29:16,384 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:29:16,385 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-04-11 22:29:16,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-11 22:29:16,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-11 22:29:16,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:29:16,387 INFO L87 Difference]: Start difference. First operand 1563 states and 1566 transitions. Second operand 64 states. [2018-04-11 22:29:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:29:17,688 INFO L93 Difference]: Finished difference Result 1751 states and 1785 transitions. [2018-04-11 22:29:17,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:29:17,689 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 1401 [2018-04-11 22:29:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:29:17,694 INFO L225 Difference]: With dead ends: 1751 [2018-04-11 22:29:17,695 INFO L226 Difference]: Without dead ends: 1731 [2018-04-11 22:29:17,696 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2861 GetRequests, 2739 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4867, Invalid=10385, Unknown=0, NotChecked=0, Total=15252 [2018-04-11 22:29:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-04-11 22:29:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1721. [2018-04-11 22:29:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2018-04-11 22:29:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 1739 transitions. [2018-04-11 22:29:17,731 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 1739 transitions. Word has length 1401 [2018-04-11 22:29:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:29:17,732 INFO L459 AbstractCegarLoop]: Abstraction has 1721 states and 1739 transitions. [2018-04-11 22:29:17,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-11 22:29:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 1739 transitions. [2018-04-11 22:29:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1538 [2018-04-11 22:29:17,751 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:29:17,752 INFO L355 BasicCegarLoop]: trace histogram [151, 136, 135, 135, 135, 135, 135, 135, 135, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:29:17,752 INFO L408 AbstractCegarLoop]: === Iteration 47 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:29:17,753 INFO L82 PathProgramCache]: Analyzing trace with hash 747415349, now seen corresponding path program 29 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:29:17,758 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:29:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:29:18,019 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:29:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 88125 backedges. 17040 proven. 990 refuted. 0 times theorem prover too weak. 70095 trivial. 0 not checked. [2018-04-11 22:29:19,027 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:29:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 88125 backedges. 17040 proven. 990 refuted. 0 times theorem prover too weak. 70095 trivial. 0 not checked. [2018-04-11 22:29:20,819 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:29:20,819 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-11 22:29:20,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-11 22:29:20,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-11 22:29:20,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:29:20,821 INFO L87 Difference]: Start difference. First operand 1721 states and 1739 transitions. Second operand 64 states. [2018-04-11 22:29:22,709 WARN L151 SmtUtils]: Spent 100ms on a formula simplification. DAG size of input: 124 DAG size of output 12 [2018-04-11 22:29:26,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:29:26,684 INFO L93 Difference]: Finished difference Result 1934 states and 2223 transitions. [2018-04-11 22:29:26,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:29:26,684 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 1537 [2018-04-11 22:29:26,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:29:26,690 INFO L225 Difference]: With dead ends: 1934 [2018-04-11 22:29:26,690 INFO L226 Difference]: Without dead ends: 1933 [2018-04-11 22:29:26,691 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3161 GetRequests, 3025 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-04-11 22:29:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2018-04-11 22:29:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1864. [2018-04-11 22:29:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2018-04-11 22:29:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 1913 transitions. [2018-04-11 22:29:26,755 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 1913 transitions. Word has length 1537 [2018-04-11 22:29:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:29:26,757 INFO L459 AbstractCegarLoop]: Abstraction has 1864 states and 1913 transitions. [2018-04-11 22:29:26,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-11 22:29:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 1913 transitions. [2018-04-11 22:29:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1539 [2018-04-11 22:29:26,771 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:29:26,772 INFO L355 BasicCegarLoop]: trace histogram [151, 136, 136, 135, 135, 135, 135, 135, 135, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:29:26,772 INFO L408 AbstractCegarLoop]: === Iteration 48 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:29:26,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1695039452, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:29:26,780 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:29:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:29:27,078 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:29:27,081 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 22:29:27,081 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:29:27,088 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:29:27,088 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:29:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 88260 backedges. 17235 proven. 1005 refuted. 0 times theorem prover too weak. 70020 trivial. 0 not checked. [2018-04-11 22:29:30,910 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:29:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 88260 backedges. 17235 proven. 1005 refuted. 0 times theorem prover too weak. 70020 trivial. 0 not checked. [2018-04-11 22:29:33,267 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:29:33,268 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 70 [2018-04-11 22:29:33,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-04-11 22:29:33,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-04-11 22:29:33,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=719, Invalid=4251, Unknown=0, NotChecked=0, Total=4970 [2018-04-11 22:29:33,269 INFO L87 Difference]: Start difference. First operand 1864 states and 1913 transitions. Second operand 71 states. [2018-04-11 22:29:36,645 WARN L151 SmtUtils]: Spent 109ms on a formula simplification. DAG size of input: 130 DAG size of output 27 [2018-04-11 22:29:37,034 WARN L151 SmtUtils]: Spent 101ms on a formula simplification. DAG size of input: 126 DAG size of output 26 [2018-04-11 22:29:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:29:43,148 INFO L93 Difference]: Finished difference Result 1914 states and 2203 transitions. [2018-04-11 22:29:43,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-04-11 22:29:43,148 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 1538 [2018-04-11 22:29:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:29:43,155 INFO L225 Difference]: With dead ends: 1914 [2018-04-11 22:29:43,156 INFO L226 Difference]: Without dead ends: 1913 [2018-04-11 22:29:43,158 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3168 GetRequests, 2978 SyntacticMatches, 29 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5949 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=5718, Invalid=20688, Unknown=0, NotChecked=0, Total=26406 [2018-04-11 22:29:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2018-04-11 22:29:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1865. [2018-04-11 22:29:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-04-11 22:29:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 1899 transitions. [2018-04-11 22:29:43,246 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 1899 transitions. Word has length 1538 [2018-04-11 22:29:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:29:43,248 INFO L459 AbstractCegarLoop]: Abstraction has 1865 states and 1899 transitions. [2018-04-11 22:29:43,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-04-11 22:29:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 1899 transitions. [2018-04-11 22:29:43,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2018-04-11 22:29:43,270 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:29:43,271 INFO L355 BasicCegarLoop]: trace histogram [167, 152, 151, 151, 151, 151, 151, 151, 151, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:29:43,271 INFO L408 AbstractCegarLoop]: === Iteration 49 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:29:43,272 INFO L82 PathProgramCache]: Analyzing trace with hash -514097355, now seen corresponding path program 30 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:29:43,280 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:29:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:29:43,657 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:29:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 109173 backedges. 38193 proven. 1110 refuted. 0 times theorem prover too weak. 69870 trivial. 0 not checked. [2018-04-11 22:29:45,636 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:29:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 109173 backedges. 38193 proven. 1110 refuted. 0 times theorem prover too weak. 69870 trivial. 0 not checked. [2018-04-11 22:29:47,822 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:29:47,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 101 [2018-04-11 22:29:47,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-04-11 22:29:47,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-04-11 22:29:47,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1258, Invalid=8842, Unknown=0, NotChecked=0, Total=10100 [2018-04-11 22:29:47,825 INFO L87 Difference]: Start difference. First operand 1865 states and 1899 transitions. Second operand 101 states. [2018-04-11 22:29:51,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:29:51,420 INFO L93 Difference]: Finished difference Result 2501 states and 2570 transitions. [2018-04-11 22:29:51,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-04-11 22:29:51,420 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 1681 [2018-04-11 22:29:51,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:29:51,427 INFO L225 Difference]: With dead ends: 2501 [2018-04-11 22:29:51,427 INFO L226 Difference]: Without dead ends: 2030 [2018-04-11 22:29:51,435 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3456 GetRequests, 3229 SyntacticMatches, 33 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10418 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5578, Invalid=32642, Unknown=0, NotChecked=0, Total=38220 [2018-04-11 22:29:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2018-04-11 22:29:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2019. [2018-04-11 22:29:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2018-04-11 22:29:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2053 transitions. [2018-04-11 22:29:51,498 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2053 transitions. Word has length 1681 [2018-04-11 22:29:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:29:51,500 INFO L459 AbstractCegarLoop]: Abstraction has 2019 states and 2053 transitions. [2018-04-11 22:29:51,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-04-11 22:29:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2053 transitions. [2018-04-11 22:29:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1837 [2018-04-11 22:29:51,526 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:29:51,527 INFO L355 BasicCegarLoop]: trace histogram [183, 167, 166, 166, 166, 166, 166, 166, 166, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:29:51,527 INFO L408 AbstractCegarLoop]: === Iteration 50 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:29:51,527 INFO L82 PathProgramCache]: Analyzing trace with hash -758277415, now seen corresponding path program 31 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:29:51,536 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:29:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:29:51,857 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:29:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 131641 backedges. 57448 proven. 975 refuted. 0 times theorem prover too weak. 73218 trivial. 0 not checked. [2018-04-11 22:29:53,951 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:29:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 131641 backedges. 57448 proven. 975 refuted. 0 times theorem prover too weak. 73218 trivial. 0 not checked. [2018-04-11 22:29:56,398 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:29:56,398 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 98 [2018-04-11 22:29:56,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-04-11 22:29:56,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-04-11 22:29:56,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1219, Invalid=8287, Unknown=0, NotChecked=0, Total=9506 [2018-04-11 22:29:56,400 INFO L87 Difference]: Start difference. First operand 2019 states and 2053 transitions. Second operand 98 states. [2018-04-11 22:29:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:29:58,464 INFO L93 Difference]: Finished difference Result 2506 states and 2586 transitions. [2018-04-11 22:29:58,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-04-11 22:29:58,465 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 1836 [2018-04-11 22:29:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:29:58,472 INFO L225 Difference]: With dead ends: 2506 [2018-04-11 22:29:58,472 INFO L226 Difference]: Without dead ends: 2029 [2018-04-11 22:29:58,477 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3748 GetRequests, 3543 SyntacticMatches, 33 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11864 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4585, Invalid=25517, Unknown=0, NotChecked=0, Total=30102 [2018-04-11 22:29:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2018-04-11 22:29:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2019. [2018-04-11 22:29:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2018-04-11 22:29:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2051 transitions. [2018-04-11 22:29:58,513 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2051 transitions. Word has length 1836 [2018-04-11 22:29:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:29:58,514 INFO L459 AbstractCegarLoop]: Abstraction has 2019 states and 2051 transitions. [2018-04-11 22:29:58,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-04-11 22:29:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2051 transitions. [2018-04-11 22:29:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1846 [2018-04-11 22:29:58,530 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:29:58,530 INFO L355 BasicCegarLoop]: trace histogram [184, 168, 167, 167, 167, 167, 167, 167, 167, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:29:58,530 INFO L408 AbstractCegarLoop]: === Iteration 51 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:29:58,531 INFO L82 PathProgramCache]: Analyzing trace with hash 6431937, now seen corresponding path program 32 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:29:58,536 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:29:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:29:58,846 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:30:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 133170 backedges. 42901 proven. 1264 refuted. 0 times theorem prover too weak. 89005 trivial. 0 not checked. [2018-04-11 22:30:01,149 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:30:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 133170 backedges. 42901 proven. 1264 refuted. 0 times theorem prover too weak. 89005 trivial. 0 not checked. [2018-04-11 22:30:03,742 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:30:03,743 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 107 [2018-04-11 22:30:03,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-04-11 22:30:03,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-04-11 22:30:03,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=9938, Unknown=0, NotChecked=0, Total=11342 [2018-04-11 22:30:03,745 INFO L87 Difference]: Start difference. First operand 2019 states and 2051 transitions. Second operand 107 states. [2018-04-11 22:30:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:30:07,746 INFO L93 Difference]: Finished difference Result 2654 states and 2719 transitions. [2018-04-11 22:30:07,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-04-11 22:30:07,747 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 1845 [2018-04-11 22:30:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:30:07,752 INFO L225 Difference]: With dead ends: 2654 [2018-04-11 22:30:07,752 INFO L226 Difference]: Without dead ends: 2193 [2018-04-11 22:30:07,757 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3790 GetRequests, 3549 SyntacticMatches, 35 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11792 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6249, Invalid=36807, Unknown=0, NotChecked=0, Total=43056 [2018-04-11 22:30:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-04-11 22:30:07,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2182. [2018-04-11 22:30:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2018-04-11 22:30:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2214 transitions. [2018-04-11 22:30:07,797 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2214 transitions. Word has length 1845 [2018-04-11 22:30:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:30:07,797 INFO L459 AbstractCegarLoop]: Abstraction has 2182 states and 2214 transitions. [2018-04-11 22:30:07,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-04-11 22:30:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2214 transitions. [2018-04-11 22:30:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2010 [2018-04-11 22:30:07,817 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:30:07,817 INFO L355 BasicCegarLoop]: trace histogram [201, 184, 183, 183, 183, 183, 183, 183, 183, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:30:07,817 INFO L408 AbstractCegarLoop]: === Iteration 52 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:30:07,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2147300429, now seen corresponding path program 33 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:30:07,824 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:30:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:30:08,156 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:30:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 159555 backedges. 65961 proven. 1112 refuted. 0 times theorem prover too weak. 92482 trivial. 0 not checked. [2018-04-11 22:30:10,578 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:30:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 159555 backedges. 65961 proven. 1112 refuted. 0 times theorem prover too weak. 92482 trivial. 0 not checked. [2018-04-11 22:30:13,396 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:30:13,397 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 104 [2018-04-11 22:30:13,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-04-11 22:30:13,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-04-11 22:30:13,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1363, Invalid=9349, Unknown=0, NotChecked=0, Total=10712 [2018-04-11 22:30:13,399 INFO L87 Difference]: Start difference. First operand 2182 states and 2214 transitions. Second operand 104 states. [2018-04-11 22:30:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:30:15,359 INFO L93 Difference]: Finished difference Result 2659 states and 2734 transitions. [2018-04-11 22:30:15,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-04-11 22:30:15,359 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 2009 [2018-04-11 22:30:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:30:15,363 INFO L225 Difference]: With dead ends: 2659 [2018-04-11 22:30:15,363 INFO L226 Difference]: Without dead ends: 2192 [2018-04-11 22:30:15,368 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4099 GetRequests, 3881 SyntacticMatches, 35 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13479 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5161, Invalid=28879, Unknown=0, NotChecked=0, Total=34040 [2018-04-11 22:30:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2018-04-11 22:30:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2182. [2018-04-11 22:30:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2018-04-11 22:30:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2212 transitions. [2018-04-11 22:30:15,410 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2212 transitions. Word has length 2009 [2018-04-11 22:30:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:30:15,411 INFO L459 AbstractCegarLoop]: Abstraction has 2182 states and 2212 transitions. [2018-04-11 22:30:15,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-04-11 22:30:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2212 transitions. [2018-04-11 22:30:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2019 [2018-04-11 22:30:15,430 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:30:15,431 INFO L355 BasicCegarLoop]: trace histogram [202, 185, 184, 184, 184, 184, 184, 184, 184, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:30:15,431 INFO L408 AbstractCegarLoop]: === Iteration 53 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:30:15,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1307962829, now seen corresponding path program 34 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:30:15,437 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:30:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:30:15,864 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:30:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 161239 backedges. 47882 proven. 1428 refuted. 0 times theorem prover too weak. 111929 trivial. 0 not checked. [2018-04-11 22:30:18,440 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:30:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 161239 backedges. 47882 proven. 1428 refuted. 0 times theorem prover too weak. 111929 trivial. 0 not checked. [2018-04-11 22:30:21,306 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:30:21,307 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 113 [2018-04-11 22:30:21,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-04-11 22:30:21,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-04-11 22:30:21,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1558, Invalid=11098, Unknown=0, NotChecked=0, Total=12656 [2018-04-11 22:30:21,309 INFO L87 Difference]: Start difference. First operand 2182 states and 2212 transitions. Second operand 113 states. [2018-04-11 22:30:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:30:25,680 INFO L93 Difference]: Finished difference Result 2816 states and 2877 transitions. [2018-04-11 22:30:25,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-04-11 22:30:25,680 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 2018 [2018-04-11 22:30:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:30:25,684 INFO L225 Difference]: With dead ends: 2816 [2018-04-11 22:30:25,685 INFO L226 Difference]: Without dead ends: 2365 [2018-04-11 22:30:25,690 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4142 GetRequests, 3887 SyntacticMatches, 37 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13251 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=6958, Invalid=41222, Unknown=0, NotChecked=0, Total=48180 [2018-04-11 22:30:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2018-04-11 22:30:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2354. [2018-04-11 22:30:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2018-04-11 22:30:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 2384 transitions. [2018-04-11 22:30:25,734 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 2384 transitions. Word has length 2018 [2018-04-11 22:30:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:30:25,734 INFO L459 AbstractCegarLoop]: Abstraction has 2354 states and 2384 transitions. [2018-04-11 22:30:25,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-04-11 22:30:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 2384 transitions. [2018-04-11 22:30:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2192 [2018-04-11 22:30:25,756 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:30:25,757 INFO L355 BasicCegarLoop]: trace histogram [220, 202, 201, 201, 201, 201, 201, 201, 201, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:30:25,757 INFO L408 AbstractCegarLoop]: === Iteration 54 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:30:25,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1544279999, now seen corresponding path program 35 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:30:25,764 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:30:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:30:26,193 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:30:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 191997 backedges. 75213 proven. 1258 refuted. 0 times theorem prover too weak. 115526 trivial. 0 not checked. [2018-04-11 22:30:28,964 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:30:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 191997 backedges. 75213 proven. 1258 refuted. 0 times theorem prover too weak. 115526 trivial. 0 not checked. [2018-04-11 22:30:32,189 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:30:32,189 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 110 [2018-04-11 22:30:32,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-04-11 22:30:32,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-04-11 22:30:32,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1515, Invalid=10475, Unknown=0, NotChecked=0, Total=11990 [2018-04-11 22:30:32,192 INFO L87 Difference]: Start difference. First operand 2354 states and 2384 transitions. Second operand 110 states. [2018-04-11 22:30:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:30:34,396 INFO L93 Difference]: Finished difference Result 2821 states and 2891 transitions. [2018-04-11 22:30:34,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-04-11 22:30:34,396 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 2191 [2018-04-11 22:30:34,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:30:34,400 INFO L225 Difference]: With dead ends: 2821 [2018-04-11 22:30:34,401 INFO L226 Difference]: Without dead ends: 2364 [2018-04-11 22:30:34,406 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4468 GetRequests, 4237 SyntacticMatches, 37 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15197 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5771, Invalid=32449, Unknown=0, NotChecked=0, Total=38220 [2018-04-11 22:30:34,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2018-04-11 22:30:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2354. [2018-04-11 22:30:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2018-04-11 22:30:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 2382 transitions. [2018-04-11 22:30:34,475 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 2382 transitions. Word has length 2191 [2018-04-11 22:30:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:30:34,477 INFO L459 AbstractCegarLoop]: Abstraction has 2354 states and 2382 transitions. [2018-04-11 22:30:34,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-04-11 22:30:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 2382 transitions. [2018-04-11 22:30:34,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2201 [2018-04-11 22:30:34,513 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:30:34,514 INFO L355 BasicCegarLoop]: trace histogram [221, 203, 202, 202, 202, 202, 202, 202, 202, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:30:34,514 INFO L408 AbstractCegarLoop]: === Iteration 55 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:30:34,515 INFO L82 PathProgramCache]: Analyzing trace with hash -887083943, now seen corresponding path program 36 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:30:34,524 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:30:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:30:34,974 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:30:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 193845 backedges. 53136 proven. 1602 refuted. 0 times theorem prover too weak. 139107 trivial. 0 not checked. [2018-04-11 22:30:37,932 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:30:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 193845 backedges. 53136 proven. 1602 refuted. 0 times theorem prover too weak. 139107 trivial. 0 not checked. [2018-04-11 22:30:41,179 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:30:41,179 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 119 [2018-04-11 22:30:41,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-04-11 22:30:41,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-04-11 22:30:41,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1720, Invalid=12322, Unknown=0, NotChecked=0, Total=14042 [2018-04-11 22:30:41,182 INFO L87 Difference]: Start difference. First operand 2354 states and 2382 transitions. Second operand 119 states. [2018-04-11 22:30:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:30:45,949 INFO L93 Difference]: Finished difference Result 2987 states and 3044 transitions. [2018-04-11 22:30:45,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-04-11 22:30:45,949 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 2200 [2018-04-11 22:30:45,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:30:45,954 INFO L225 Difference]: With dead ends: 2987 [2018-04-11 22:30:45,954 INFO L226 Difference]: Without dead ends: 2546 [2018-04-11 22:30:45,960 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4512 GetRequests, 4243 SyntacticMatches, 39 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14795 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=7705, Invalid=45887, Unknown=0, NotChecked=0, Total=53592 [2018-04-11 22:30:45,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2018-04-11 22:30:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2535. [2018-04-11 22:30:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2018-04-11 22:30:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 2563 transitions. [2018-04-11 22:30:46,036 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 2563 transitions. Word has length 2200 [2018-04-11 22:30:46,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:30:46,037 INFO L459 AbstractCegarLoop]: Abstraction has 2535 states and 2563 transitions. [2018-04-11 22:30:46,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-04-11 22:30:46,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 2563 transitions. [2018-04-11 22:30:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2383 [2018-04-11 22:30:46,079 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:30:46,080 INFO L355 BasicCegarLoop]: trace histogram [240, 221, 220, 220, 220, 220, 220, 220, 220, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:30:46,080 INFO L408 AbstractCegarLoop]: === Iteration 56 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:30:46,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1792423451, now seen corresponding path program 37 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:30:46,090 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:30:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:30:46,557 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:30:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 229459 backedges. 85231 proven. 1413 refuted. 0 times theorem prover too weak. 142815 trivial. 0 not checked. [2018-04-11 22:30:49,775 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:30:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 229459 backedges. 85231 proven. 1413 refuted. 0 times theorem prover too weak. 142815 trivial. 0 not checked. [2018-04-11 22:30:53,436 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:30:53,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 116 [2018-04-11 22:30:53,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-04-11 22:30:53,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-04-11 22:30:53,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1675, Invalid=11665, Unknown=0, NotChecked=0, Total=13340 [2018-04-11 22:30:53,439 INFO L87 Difference]: Start difference. First operand 2535 states and 2563 transitions. Second operand 116 states. [2018-04-11 22:30:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:30:55,809 INFO L93 Difference]: Finished difference Result 2992 states and 3057 transitions. [2018-04-11 22:30:55,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-04-11 22:30:55,809 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 2382 [2018-04-11 22:30:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:30:55,813 INFO L225 Difference]: With dead ends: 2992 [2018-04-11 22:30:55,813 INFO L226 Difference]: Without dead ends: 2545 [2018-04-11 22:30:55,818 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4855 GetRequests, 4611 SyntacticMatches, 39 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17018 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6415, Invalid=36227, Unknown=0, NotChecked=0, Total=42642 [2018-04-11 22:30:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2018-04-11 22:30:55,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2535. [2018-04-11 22:30:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2018-04-11 22:30:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 2561 transitions. [2018-04-11 22:30:55,863 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 2561 transitions. Word has length 2382 [2018-04-11 22:30:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:30:55,863 INFO L459 AbstractCegarLoop]: Abstraction has 2535 states and 2561 transitions. [2018-04-11 22:30:55,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-04-11 22:30:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 2561 transitions. [2018-04-11 22:30:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2392 [2018-04-11 22:30:55,889 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:30:55,889 INFO L355 BasicCegarLoop]: trace histogram [241, 222, 221, 221, 221, 221, 221, 221, 221, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:30:55,890 INFO L408 AbstractCegarLoop]: === Iteration 57 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:30:55,890 INFO L82 PathProgramCache]: Analyzing trace with hash 347874101, now seen corresponding path program 38 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:30:55,896 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:30:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:30:56,286 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:30:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 231480 backedges. 58663 proven. 1786 refuted. 0 times theorem prover too weak. 171031 trivial. 0 not checked. [2018-04-11 22:30:59,639 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:31:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 231480 backedges. 58663 proven. 1786 refuted. 0 times theorem prover too weak. 171031 trivial. 0 not checked. [2018-04-11 22:31:03,345 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:31:03,345 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 125 [2018-04-11 22:31:03,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-04-11 22:31:03,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-04-11 22:31:03,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1890, Invalid=13610, Unknown=0, NotChecked=0, Total=15500 [2018-04-11 22:31:03,348 INFO L87 Difference]: Start difference. First operand 2535 states and 2561 transitions. Second operand 125 states. [2018-04-11 22:31:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:31:08,410 INFO L93 Difference]: Finished difference Result 3167 states and 3220 transitions. [2018-04-11 22:31:08,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-04-11 22:31:08,410 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 2391 [2018-04-11 22:31:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:31:08,414 INFO L225 Difference]: With dead ends: 3167 [2018-04-11 22:31:08,414 INFO L226 Difference]: Without dead ends: 2736 [2018-04-11 22:31:08,419 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4900 GetRequests, 4617 SyntacticMatches, 41 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16424 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=8490, Invalid=50802, Unknown=0, NotChecked=0, Total=59292 [2018-04-11 22:31:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2018-04-11 22:31:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2725. [2018-04-11 22:31:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2725 states. [2018-04-11 22:31:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 2751 transitions. [2018-04-11 22:31:08,470 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 2751 transitions. Word has length 2391 [2018-04-11 22:31:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:31:08,471 INFO L459 AbstractCegarLoop]: Abstraction has 2725 states and 2751 transitions. [2018-04-11 22:31:08,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-04-11 22:31:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 2751 transitions. [2018-04-11 22:31:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2583 [2018-04-11 22:31:08,500 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:31:08,501 INFO L355 BasicCegarLoop]: trace histogram [261, 241, 240, 240, 240, 240, 240, 240, 240, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:31:08,501 INFO L408 AbstractCegarLoop]: === Iteration 58 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:31:08,501 INFO L82 PathProgramCache]: Analyzing trace with hash 408584409, now seen corresponding path program 39 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:31:08,507 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:31:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:31:08,938 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:31:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 272460 backedges. 96042 proven. 1577 refuted. 0 times theorem prover too weak. 174841 trivial. 0 not checked. [2018-04-11 22:31:12,532 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:31:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 272460 backedges. 96042 proven. 1577 refuted. 0 times theorem prover too weak. 174841 trivial. 0 not checked. [2018-04-11 22:31:16,621 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:31:16,622 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 122 [2018-04-11 22:31:16,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-04-11 22:31:16,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-04-11 22:31:16,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1843, Invalid=12919, Unknown=0, NotChecked=0, Total=14762 [2018-04-11 22:31:16,624 INFO L87 Difference]: Start difference. First operand 2725 states and 2751 transitions. Second operand 122 states. [2018-04-11 22:31:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:31:19,151 INFO L93 Difference]: Finished difference Result 3172 states and 3232 transitions. [2018-04-11 22:31:19,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-04-11 22:31:19,152 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 2582 [2018-04-11 22:31:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:31:19,155 INFO L225 Difference]: With dead ends: 3172 [2018-04-11 22:31:19,155 INFO L226 Difference]: Without dead ends: 2735 [2018-04-11 22:31:19,160 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 5260 GetRequests, 5003 SyntacticMatches, 41 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18942 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=7093, Invalid=40213, Unknown=0, NotChecked=0, Total=47306 [2018-04-11 22:31:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2018-04-11 22:31:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2725. [2018-04-11 22:31:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2725 states. [2018-04-11 22:31:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 2749 transitions. [2018-04-11 22:31:19,233 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 2749 transitions. Word has length 2582 [2018-04-11 22:31:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:31:19,235 INFO L459 AbstractCegarLoop]: Abstraction has 2725 states and 2749 transitions. [2018-04-11 22:31:19,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-04-11 22:31:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 2749 transitions. [2018-04-11 22:31:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2592 [2018-04-11 22:31:19,268 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:31:19,269 INFO L355 BasicCegarLoop]: trace histogram [262, 242, 241, 241, 241, 241, 241, 241, 241, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:31:19,269 INFO L408 AbstractCegarLoop]: === Iteration 59 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:31:19,269 INFO L82 PathProgramCache]: Analyzing trace with hash 871890625, now seen corresponding path program 40 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:31:19,275 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:31:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:31:19,713 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:31:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 274663 backedges. 64463 proven. 1980 refuted. 0 times theorem prover too weak. 208220 trivial. 0 not checked. [2018-04-11 22:31:23,534 INFO L314 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-04-11 22:31:25,351 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-04-11 22:31:25,352 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-11 22:31:25,355 WARN L197 ceAbstractionStarter]: Timeout [2018-04-11 22:31:25,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.04 10:31:25 BoogieIcfgContainer [2018-04-11 22:31:25,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-11 22:31:25,356 INFO L168 Benchmark]: Toolchain (without parser) took 223032.10 ms. Allocated memory was 311.4 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 255.0 MB in the beginning and 2.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 281.6 MB. Max. memory is 5.3 GB. [2018-04-11 22:31:25,357 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 311.4 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-11 22:31:25,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.34 ms. Allocated memory is still 311.4 MB. Free memory was 253.0 MB in the beginning and 245.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-04-11 22:31:25,358 INFO L168 Benchmark]: Boogie Preprocessor took 30.89 ms. Allocated memory is still 311.4 MB. Free memory was 245.1 MB in the beginning and 243.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-11 22:31:25,358 INFO L168 Benchmark]: RCFGBuilder took 336.54 ms. Allocated memory was 311.4 MB in the beginning and 476.1 MB in the end (delta: 164.6 MB). Free memory was 243.1 MB in the beginning and 442.9 MB in the end (delta: -199.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 5.3 GB. [2018-04-11 22:31:25,358 INFO L168 Benchmark]: TraceAbstraction took 222459.42 ms. Allocated memory was 476.1 MB in the beginning and 2.3 GB in the end (delta: 1.8 GB). Free memory was 441.1 MB in the beginning and 2.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 303.1 MB. Max. memory is 5.3 GB. [2018-04-11 22:31:25,360 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 311.4 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 200.34 ms. Allocated memory is still 311.4 MB. Free memory was 253.0 MB in the beginning and 245.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.89 ms. Allocated memory is still 311.4 MB. Free memory was 245.1 MB in the beginning and 243.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 336.54 ms. Allocated memory was 311.4 MB in the beginning and 476.1 MB in the end (delta: 164.6 MB). Free memory was 243.1 MB in the beginning and 442.9 MB in the end (delta: -199.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 222459.42 ms. Allocated memory was 476.1 MB in the beginning and 2.3 GB in the end (delta: 1.8 GB). Free memory was 441.1 MB in the beginning and 2.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 303.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 30). Cancelled while BasicCegarLoop was analyzing trace of length 2592 with TraceHistMax 262, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 23). Cancelled while BasicCegarLoop was analyzing trace of length 2592 with TraceHistMax 262, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 27). Cancelled while BasicCegarLoop was analyzing trace of length 2592 with TraceHistMax 262, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 18). Cancelled while BasicCegarLoop was analyzing trace of length 2592 with TraceHistMax 262, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 18). Cancelled while BasicCegarLoop was analyzing trace of length 2592 with TraceHistMax 262, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 18). Cancelled while BasicCegarLoop was analyzing trace of length 2592 with TraceHistMax 262, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 61 locations, 6 error locations. TIMEOUT Result, 222.3s OverallTime, 59 OverallIterations, 262 TraceHistogramMax, 89.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5011 SDtfs, 18627 SDslu, 67003 SDs, 0 SdLazy, 69646 SolverSat, 4770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95714 GetRequests, 89187 SyntacticMatches, 933 SemanticMatches, 5594 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262782 ImplicationChecksByTransitivity, 112.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2725occurred in iteration=57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 58 MinimizatonAttempts, 799 StatesRemovedByMinimization, 57 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 114.5s InterpolantComputationTime, 46554 NumberOfCodeBlocks, 46554 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 92992 ConstructedInterpolants, 1655 QuantifiedInterpolants, 252106818 SizeOfPredicates, 1863 NumberOfNonLiveVariables, 84577 ConjunctsInSsa, 2134 ConjunctsInUnsatCore, 116 InterpolantComputations, 15 PerfectInterpolantSequences, 5314344/5367644 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-11_22-31-25-367.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-11_22-31-25-367.csv Completed graceful shutdown