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_false-valid-deref-read.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-4cf2d92 [2018-03-28 13:07:18,457 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-03-28 13:07:18,459 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-03-28 13:07:18,476 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-03-28 13:07:18,477 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-03-28 13:07:18,478 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-03-28 13:07:18,479 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-03-28 13:07:18,482 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-03-28 13:07:18,484 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-03-28 13:07:18,485 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-03-28 13:07:18,486 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-03-28 13:07:18,486 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-03-28 13:07:18,487 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-03-28 13:07:18,488 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-03-28 13:07:18,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-03-28 13:07:18,491 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-03-28 13:07:18,493 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-03-28 13:07:18,495 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-03-28 13:07:18,497 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-03-28 13:07:18,498 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-03-28 13:07:18,500 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-03-28 13:07:18,501 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-03-28 13:07:18,501 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-03-28 13:07:18,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-03-28 13:07:18,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-03-28 13:07:18,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-03-28 13:07:18,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-03-28 13:07:18,505 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-03-28 13:07:18,506 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-03-28 13:07:18,506 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-03-28 13:07:18,507 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-03-28 13:07:18,507 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 [2018-03-28 13:07:18,535 INFO L110 SettingsManager]: Loading preferences was successful [2018-03-28 13:07:18,536 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-03-28 13:07:18,536 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-03-28 13:07:18,536 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-03-28 13:07:18,537 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-03-28 13:07:18,537 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-03-28 13:07:18,537 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-03-28 13:07:18,537 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-03-28 13:07:18,538 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-03-28 13:07:18,538 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-03-28 13:07:18,538 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-03-28 13:07:18,538 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-03-28 13:07:18,539 INFO L133 SettingsManager]: * sizeof long=4 [2018-03-28 13:07:18,539 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-03-28 13:07:18,540 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-03-28 13:07:18,540 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-03-28 13:07:18,540 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-03-28 13:07:18,540 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-03-28 13:07:18,540 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-03-28 13:07:18,541 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-03-28 13:07:18,541 INFO L133 SettingsManager]: * sizeof long double=12 [2018-03-28 13:07:18,541 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-03-28 13:07:18,541 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-03-28 13:07:18,541 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-03-28 13:07:18,542 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-03-28 13:07:18,542 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-28 13:07:18,542 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-03-28 13:07:18,542 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-03-28 13:07:18,542 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-03-28 13:07:18,542 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-03-28 13:07:18,543 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-03-28 13:07:18,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 13:07:18,543 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-03-28 13:07:18,544 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-03-28 13:07:18,544 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-03-28 13:07:18,545 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-03-28 13:07:18,545 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-03-28 13:07:18,595 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-03-28 13:07:18,611 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-03-28 13:07:18,616 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-03-28 13:07:18,617 INFO L271 PluginConnector]: Initializing CDTParser... [2018-03-28 13:07:18,618 INFO L276 PluginConnector]: CDTParser initialized [2018-03-28 13:07:18,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-03-28 13:07:18,870 INFO L228 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5d246e145 [2018-03-28 13:07:19,054 INFO L291 CDTParser]: IsIndexed: true [2018-03-28 13:07:19,055 INFO L292 CDTParser]: Found 1 translation units. [2018-03-28 13:07:19,055 INFO L171 CDTParser]: Scanning ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-03-28 13:07:19,057 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-03-28 13:07:19,057 INFO L215 ultiparseSymbolTable]: [2018-03-28 13:07:19,057 INFO L218 ultiparseSymbolTable]: Function table: [2018-03-28 13:07:19,058 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__foo ('foo') in ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-03-28 13:07:19,058 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-03-28 13:07:19,058 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-03-28 13:07:19,058 INFO L233 ultiparseSymbolTable]: [2018-03-28 13:07:19,092 INFO L334 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5d246e145 [2018-03-28 13:07:19,097 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-03-28 13:07:19,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-03-28 13:07:19,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-03-28 13:07:19,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-03-28 13:07:19,109 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-03-28 13:07:19,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579117bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19, skipping insertion in model container [2018-03-28 13:07:19,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,137 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-28 13:07:19,153 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-28 13:07:19,321 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-28 13:07:19,351 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-28 13:07:19,357 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-03-28 13:07:19,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19 WrapperNode [2018-03-28 13:07:19,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-03-28 13:07:19,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-03-28 13:07:19,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-03-28 13:07:19,376 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-03-28 13:07:19,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (1/1) ... [2018-03-28 13:07:19,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-03-28 13:07:19,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-03-28 13:07:19,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-03-28 13:07:19,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-03-28 13:07:19,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (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 [2018-03-28 13:07:19,472 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-03-28 13:07:19,472 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-03-28 13:07:19,472 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__foo [2018-03-28 13:07:19,472 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-03-28 13:07:19,472 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__foo [2018-03-28 13:07:19,473 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-03-28 13:07:19,473 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-03-28 13:07:19,473 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-03-28 13:07:19,473 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-03-28 13:07:19,473 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-03-28 13:07:19,473 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-03-28 13:07:19,474 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-03-28 13:07:19,474 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-03-28 13:07:19,851 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-03-28 13:07:19,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 01:07:19 BoogieIcfgContainer [2018-03-28 13:07:19,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-03-28 13:07:19,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-03-28 13:07:19,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-03-28 13:07:19,861 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-03-28 13:07:19,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.03 01:07:19" (1/3) ... [2018-03-28 13:07:19,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e514fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 01:07:19, skipping insertion in model container [2018-03-28 13:07:19,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 01:07:19" (2/3) ... [2018-03-28 13:07:19,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e514fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 01:07:19, skipping insertion in model container [2018-03-28 13:07:19,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 01:07:19" (3/3) ... [2018-03-28 13:07:19,875 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-03-28 13:07:19,915 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-03-28 13:07:19,926 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-03-28 13:07:20,002 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-03-28 13:07:20,005 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-03-28 13:07:20,005 INFO L370 AbstractCegarLoop]: Hoare is true [2018-03-28 13:07:20,005 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-03-28 13:07:20,005 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-03-28 13:07:20,005 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-03-28 13:07:20,006 INFO L374 AbstractCegarLoop]: Difference is false [2018-03-28 13:07:20,006 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-03-28 13:07:20,006 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-03-28 13:07:20,007 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-03-28 13:07:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-03-28 13:07:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-03-28 13:07:20,041 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:20,042 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 13:07:20,043 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:20,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1628091867, 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 [2018-03-28 13:07:20,069 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:20,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:20,211 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:20,299 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 13:07:20,300 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-03-28 13:07:20,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-28 13:07:20,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-28 13:07:20,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-28 13:07:20,322 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2018-03-28 13:07:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:20,570 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2018-03-28 13:07:20,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-03-28 13:07:20,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-03-28 13:07:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:20,586 INFO L225 Difference]: With dead ends: 136 [2018-03-28 13:07:20,586 INFO L226 Difference]: Without dead ends: 80 [2018-03-28 13:07:20,590 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 [2018-03-28 13:07:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-03-28 13:07:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 64. [2018-03-28 13:07:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-03-28 13:07:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2018-03-28 13:07:20,668 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 13 [2018-03-28 13:07:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:20,669 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2018-03-28 13:07:20,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-28 13:07:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2018-03-28 13:07:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-03-28 13:07:20,670 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:20,671 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] [2018-03-28 13:07:20,671 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:20,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1198271325, 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 [2018-03-28 13:07:20,685 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:20,716 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:20,730 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:20,847 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 13:07:20,848 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-03-28 13:07:20,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-28 13:07:20,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-28 13:07:20,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-28 13:07:20,850 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 4 states. [2018-03-28 13:07:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:20,879 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2018-03-28 13:07:20,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-03-28 13:07:20,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-03-28 13:07:20,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:20,883 INFO L225 Difference]: With dead ends: 78 [2018-03-28 13:07:20,884 INFO L226 Difference]: Without dead ends: 77 [2018-03-28 13:07:20,885 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 [2018-03-28 13:07:20,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-03-28 13:07:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2018-03-28 13:07:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-03-28 13:07:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-03-28 13:07:20,895 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 22 [2018-03-28 13:07:20,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:20,896 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-03-28 13:07:20,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-28 13:07:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-03-28 13:07:20,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-03-28 13:07:20,897 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:20,897 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 13:07:20,897 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:20,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1508294640, 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 [2018-03-28 13:07:20,913 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:20,949 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:20,969 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 [2018-03-28 13:07:20,971 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-28 13:07:20,973 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-28 13:07:20,973 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-03-28 13:07:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:20,988 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:21,014 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 13:07:21,015 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-03-28 13:07:21,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-28 13:07:21,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-28 13:07:21,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-03-28 13:07:21,016 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2018-03-28 13:07:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:21,058 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-03-28 13:07:21,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-03-28 13:07:21,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-03-28 13:07:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:21,060 INFO L225 Difference]: With dead ends: 67 [2018-03-28 13:07:21,060 INFO L226 Difference]: Without dead ends: 66 [2018-03-28 13:07:21,061 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 [2018-03-28 13:07:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-03-28 13:07:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-03-28 13:07:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-03-28 13:07:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2018-03-28 13:07:21,069 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 23 [2018-03-28 13:07:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:21,069 INFO L459 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2018-03-28 13:07:21,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-28 13:07:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2018-03-28 13:07:21,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-03-28 13:07:21,071 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:21,071 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] [2018-03-28 13:07:21,071 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:21,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1508294641, 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 [2018-03-28 13:07:21,081 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:21,098 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:21,106 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-03-28 13:07:21,107 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-28 13:07:21,111 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-28 13:07:21,111 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-28 13:07:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:21,149 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:21,275 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 13:07:21,275 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2018-03-28 13:07:21,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-03-28 13:07:21,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-03-28 13:07:21,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-03-28 13:07:21,276 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 10 states. [2018-03-28 13:07:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:21,390 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-03-28 13:07:21,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-03-28 13:07:21,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-03-28 13:07:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:21,392 INFO L225 Difference]: With dead ends: 75 [2018-03-28 13:07:21,392 INFO L226 Difference]: Without dead ends: 74 [2018-03-28 13:07:21,392 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 [2018-03-28 13:07:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-03-28 13:07:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2018-03-28 13:07:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-03-28 13:07:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-03-28 13:07:21,400 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 23 [2018-03-28 13:07:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:21,400 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-03-28 13:07:21,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-03-28 13:07:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-03-28 13:07:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-03-28 13:07:21,401 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:21,401 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] [2018-03-28 13:07:21,401 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:21,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1757973218, 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 [2018-03-28 13:07:21,410 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:21,426 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:21,446 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:21,543 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:21,543 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-03-28 13:07:21,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-28 13:07:21,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-28 13:07:21,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-03-28 13:07:21,544 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 8 states. [2018-03-28 13:07:21,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:21,832 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2018-03-28 13:07:21,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-28 13:07:21,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-03-28 13:07:21,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:21,833 INFO L225 Difference]: With dead ends: 101 [2018-03-28 13:07:21,834 INFO L226 Difference]: Without dead ends: 100 [2018-03-28 13:07:21,834 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-03-28 13:07:21,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-03-28 13:07:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 84. [2018-03-28 13:07:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-03-28 13:07:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2018-03-28 13:07:21,844 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 31 [2018-03-28 13:07:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:21,844 INFO L459 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2018-03-28 13:07:21,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-28 13:07:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2018-03-28 13:07:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-03-28 13:07:21,845 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:21,846 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] [2018-03-28 13:07:21,846 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:21,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1337405038, 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 [2018-03-28 13:07:21,855 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:21,873 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:21,880 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 [2018-03-28 13:07:21,880 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-28 13:07:21,884 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-28 13:07:21,885 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-28 13:07:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:21,976 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:22,110 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:22,110 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-03-28 13:07:22,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-03-28 13:07:22,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-03-28 13:07:22,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-03-28 13:07:22,111 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 14 states. [2018-03-28 13:07:22,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:22,391 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-03-28 13:07:22,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-03-28 13:07:22,391 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-03-28 13:07:22,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:22,392 INFO L225 Difference]: With dead ends: 95 [2018-03-28 13:07:22,392 INFO L226 Difference]: Without dead ends: 94 [2018-03-28 13:07:22,393 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-03-28 13:07:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-03-28 13:07:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2018-03-28 13:07:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-03-28 13:07:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2018-03-28 13:07:22,400 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 32 [2018-03-28 13:07:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:22,400 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2018-03-28 13:07:22,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-03-28 13:07:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2018-03-28 13:07:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-03-28 13:07:22,401 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:22,401 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] [2018-03-28 13:07:22,401 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:22,401 INFO L82 PathProgramCache]: Analyzing trace with hash 254608978, 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 [2018-03-28 13:07:22,409 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:22,421 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:22,446 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:22,533 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 13:07:22,533 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2018-03-28 13:07:22,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-03-28 13:07:22,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-03-28 13:07:22,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-03-28 13:07:22,534 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 9 states. [2018-03-28 13:07:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:22,634 INFO L93 Difference]: Finished difference Result 174 states and 188 transitions. [2018-03-28 13:07:22,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-03-28 13:07:22,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-03-28 13:07:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:22,636 INFO L225 Difference]: With dead ends: 174 [2018-03-28 13:07:22,636 INFO L226 Difference]: Without dead ends: 102 [2018-03-28 13:07:22,636 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-03-28 13:07:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-03-28 13:07:22,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 89. [2018-03-28 13:07:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-03-28 13:07:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2018-03-28 13:07:22,647 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 33 [2018-03-28 13:07:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:22,648 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2018-03-28 13:07:22,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-03-28 13:07:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2018-03-28 13:07:22,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-03-28 13:07:22,651 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:22,651 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] [2018-03-28 13:07:22,651 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:22,651 INFO L82 PathProgramCache]: Analyzing trace with hash 650265267, 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 [2018-03-28 13:07:22,661 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:22,678 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:22,746 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 13:07:22,876 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:22,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-03-28 13:07:22,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-03-28 13:07:22,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-03-28 13:07:22,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-03-28 13:07:22,877 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 12 states. [2018-03-28 13:07:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:23,031 INFO L93 Difference]: Finished difference Result 180 states and 194 transitions. [2018-03-28 13:07:23,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-28 13:07:23,031 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-03-28 13:07:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:23,032 INFO L225 Difference]: With dead ends: 180 [2018-03-28 13:07:23,032 INFO L226 Difference]: Without dead ends: 105 [2018-03-28 13:07:23,033 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-03-28 13:07:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-03-28 13:07:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2018-03-28 13:07:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-03-28 13:07:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2018-03-28 13:07:23,042 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 42 [2018-03-28 13:07:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:23,042 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2018-03-28 13:07:23,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-03-28 13:07:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2018-03-28 13:07:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-03-28 13:07:23,044 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:23,044 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 13:07:23,045 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:23,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1362407426, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 13:07:23,051 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:23,070 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-03-28 13:07:23,135 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-03-28 13:07:23,216 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 13:07:23,216 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 15 [2018-03-28 13:07:23,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-03-28 13:07:23,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-03-28 13:07:23,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-03-28 13:07:23,217 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 15 states. [2018-03-28 13:07:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:23,450 INFO L93 Difference]: Finished difference Result 211 states and 225 transitions. [2018-03-28 13:07:23,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-03-28 13:07:23,450 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2018-03-28 13:07:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:23,451 INFO L225 Difference]: With dead ends: 211 [2018-03-28 13:07:23,451 INFO L226 Difference]: Without dead ends: 130 [2018-03-28 13:07:23,452 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2018-03-28 13:07:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-03-28 13:07:23,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2018-03-28 13:07:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-03-28 13:07:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2018-03-28 13:07:23,462 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 49 [2018-03-28 13:07:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:23,462 INFO L459 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2018-03-28 13:07:23,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-03-28 13:07:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2018-03-28 13:07:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-03-28 13:07:23,463 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:23,464 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 13:07:23,464 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:23,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1926995086, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 13:07:23,480 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:23,499 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 13:07:23,541 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 13:07:23,590 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 13:07:23,590 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-03-28 13:07:23,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-03-28 13:07:23,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-03-28 13:07:23,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-03-28 13:07:23,591 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand 9 states. [2018-03-28 13:07:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:23,683 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2018-03-28 13:07:23,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-03-28 13:07:23,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2018-03-28 13:07:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:23,686 INFO L225 Difference]: With dead ends: 129 [2018-03-28 13:07:23,686 INFO L226 Difference]: Without dead ends: 128 [2018-03-28 13:07:23,687 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-03-28 13:07:23,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-03-28 13:07:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 113. [2018-03-28 13:07:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-03-28 13:07:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2018-03-28 13:07:23,698 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 51 [2018-03-28 13:07:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:23,698 INFO L459 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2018-03-28 13:07:23,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-03-28 13:07:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2018-03-28 13:07:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-03-28 13:07:23,708 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:23,708 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 13:07:23,709 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:23,709 INFO L82 PathProgramCache]: Analyzing trace with hash 977205751, now seen corresponding path program 1 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 [2018-03-28 13:07:23,716 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:23,736 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 13:07:23,764 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 13:07:23,823 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:23,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-03-28 13:07:23,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-28 13:07:23,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-28 13:07:23,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-03-28 13:07:23,824 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 8 states. [2018-03-28 13:07:23,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:23,886 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2018-03-28 13:07:23,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-28 13:07:23,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-03-28 13:07:23,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:23,888 INFO L225 Difference]: With dead ends: 161 [2018-03-28 13:07:23,888 INFO L226 Difference]: Without dead ends: 141 [2018-03-28 13:07:23,889 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-03-28 13:07:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-03-28 13:07:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2018-03-28 13:07:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-03-28 13:07:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 138 transitions. [2018-03-28 13:07:23,895 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 138 transitions. Word has length 59 [2018-03-28 13:07:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:23,896 INFO L459 AbstractCegarLoop]: Abstraction has 131 states and 138 transitions. [2018-03-28 13:07:23,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-28 13:07:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 138 transitions. [2018-03-28 13:07:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-03-28 13:07:23,898 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:23,898 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2018-03-28 13:07:23,898 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:23,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1627776719, now seen corresponding path program 1 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 [2018-03-28 13:07:23,909 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:23,936 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 13:07:24,025 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 13:07:24,313 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:24,313 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2018-03-28 13:07:24,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-03-28 13:07:24,314 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-03-28 13:07:24,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2018-03-28 13:07:24,315 INFO L87 Difference]: Start difference. First operand 131 states and 138 transitions. Second operand 21 states. [2018-03-28 13:07:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:24,762 INFO L93 Difference]: Finished difference Result 264 states and 281 transitions. [2018-03-28 13:07:24,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-03-28 13:07:24,764 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 87 [2018-03-28 13:07:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:24,766 INFO L225 Difference]: With dead ends: 264 [2018-03-28 13:07:24,766 INFO L226 Difference]: Without dead ends: 185 [2018-03-28 13:07:24,768 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2018-03-28 13:07:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-03-28 13:07:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2018-03-28 13:07:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-03-28 13:07:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 177 transitions. [2018-03-28 13:07:24,780 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 177 transitions. Word has length 87 [2018-03-28 13:07:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:24,780 INFO L459 AbstractCegarLoop]: Abstraction has 168 states and 177 transitions. [2018-03-28 13:07:24,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-03-28 13:07:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 177 transitions. [2018-03-28 13:07:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-03-28 13:07:24,782 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:24,783 INFO L355 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-03-28 13:07:24,784 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:24,784 INFO L82 PathProgramCache]: Analyzing trace with hash 898895569, now seen corresponding path program 2 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 [2018-03-28 13:07:24,807 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:24,841 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-03-28 13:07:25,041 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-03-28 13:07:25,187 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-03-28 13:07:25,187 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2018-03-28 13:07:25,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-03-28 13:07:25,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-03-28 13:07:25,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-03-28 13:07:25,188 INFO L87 Difference]: Start difference. First operand 168 states and 177 transitions. Second operand 13 states. [2018-03-28 13:07:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:25,588 INFO L93 Difference]: Finished difference Result 263 states and 277 transitions. [2018-03-28 13:07:25,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-03-28 13:07:25,588 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2018-03-28 13:07:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:25,589 INFO L225 Difference]: With dead ends: 263 [2018-03-28 13:07:25,589 INFO L226 Difference]: Without dead ends: 178 [2018-03-28 13:07:25,590 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-03-28 13:07:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-03-28 13:07:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2018-03-28 13:07:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-03-28 13:07:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 175 transitions. [2018-03-28 13:07:25,598 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 175 transitions. Word has length 99 [2018-03-28 13:07:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:25,598 INFO L459 AbstractCegarLoop]: Abstraction has 168 states and 175 transitions. [2018-03-28 13:07:25,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-03-28 13:07:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 175 transitions. [2018-03-28 13:07:25,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-03-28 13:07:25,599 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:25,599 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] [2018-03-28 13:07:25,600 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:25,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1018891805, now seen corresponding path program 2 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 [2018-03-28 13:07:25,607 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:25,643 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-03-28 13:07:25,699 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-03-28 13:07:25,817 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:25,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-03-28 13:07:25,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-28 13:07:25,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-28 13:07:25,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-03-28 13:07:25,818 INFO L87 Difference]: Start difference. First operand 168 states and 175 transitions. Second operand 16 states. [2018-03-28 13:07:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:26,053 INFO L93 Difference]: Finished difference Result 263 states and 274 transitions. [2018-03-28 13:07:26,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-03-28 13:07:26,053 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 116 [2018-03-28 13:07:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:26,054 INFO L225 Difference]: With dead ends: 263 [2018-03-28 13:07:26,054 INFO L226 Difference]: Without dead ends: 178 [2018-03-28 13:07:26,055 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 215 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2018-03-28 13:07:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-03-28 13:07:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2018-03-28 13:07:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-03-28 13:07:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 173 transitions. [2018-03-28 13:07:26,062 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 173 transitions. Word has length 116 [2018-03-28 13:07:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:26,062 INFO L459 AbstractCegarLoop]: Abstraction has 168 states and 173 transitions. [2018-03-28 13:07:26,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-28 13:07:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 173 transitions. [2018-03-28 13:07:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-03-28 13:07:26,064 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:26,064 INFO L355 BasicCegarLoop]: trace histogram [10, 8, 7, 7, 7, 7, 7, 7, 7, 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] [2018-03-28 13:07:26,064 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:26,064 INFO L82 PathProgramCache]: Analyzing trace with hash 906271708, 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 [2018-03-28 13:07:26,076 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:26,115 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 216 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-03-28 13:07:26,211 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 216 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-03-28 13:07:26,344 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:26,344 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2018-03-28 13:07:26,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-03-28 13:07:26,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-03-28 13:07:26,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-03-28 13:07:26,345 INFO L87 Difference]: Start difference. First operand 168 states and 173 transitions. Second operand 18 states. [2018-03-28 13:07:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:26,596 INFO L93 Difference]: Finished difference Result 267 states and 275 transitions. [2018-03-28 13:07:26,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-03-28 13:07:26,596 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 125 [2018-03-28 13:07:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:26,597 INFO L225 Difference]: With dead ends: 267 [2018-03-28 13:07:26,597 INFO L226 Difference]: Without dead ends: 182 [2018-03-28 13:07:26,598 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 229 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-03-28 13:07:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-03-28 13:07:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2018-03-28 13:07:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-03-28 13:07:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 171 transitions. [2018-03-28 13:07:26,608 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 171 transitions. Word has length 125 [2018-03-28 13:07:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:26,608 INFO L459 AbstractCegarLoop]: Abstraction has 168 states and 171 transitions. [2018-03-28 13:07:26,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-03-28 13:07:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 171 transitions. [2018-03-28 13:07:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-03-28 13:07:26,610 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:26,610 INFO L355 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 8, 8, 8, 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] [2018-03-28 13:07:26,610 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:26,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2126374397, 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 [2018-03-28 13:07:26,619 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:26,658 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 166 proven. 36 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-03-28 13:07:26,692 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 166 proven. 36 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-03-28 13:07:26,802 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:26,803 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-03-28 13:07:26,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-28 13:07:26,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-28 13:07:26,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-03-28 13:07:26,803 INFO L87 Difference]: Start difference. First operand 168 states and 171 transitions. Second operand 16 states. [2018-03-28 13:07:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:27,101 INFO L93 Difference]: Finished difference Result 225 states and 235 transitions. [2018-03-28 13:07:27,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-03-28 13:07:27,101 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2018-03-28 13:07:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:27,103 INFO L225 Difference]: With dead ends: 225 [2018-03-28 13:07:27,103 INFO L226 Difference]: Without dead ends: 224 [2018-03-28 13:07:27,104 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-03-28 13:07:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-03-28 13:07:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2018-03-28 13:07:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-03-28 13:07:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 213 transitions. [2018-03-28 13:07:27,115 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 213 transitions. Word has length 134 [2018-03-28 13:07:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:27,116 INFO L459 AbstractCegarLoop]: Abstraction has 203 states and 213 transitions. [2018-03-28 13:07:27,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-28 13:07:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 213 transitions. [2018-03-28 13:07:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-03-28 13:07:27,117 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:27,118 INFO L355 BasicCegarLoop]: trace histogram [11, 9, 9, 8, 8, 8, 8, 8, 8, 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] [2018-03-28 13:07:27,118 INFO L408 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:27,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1493096815, now seen corresponding path program 1 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 [2018-03-28 13:07:27,127 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:27,157 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:27,166 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 [2018-03-28 13:07:27,167 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-28 13:07:27,181 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-28 13:07:27,181 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-28 13:07:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 181 proven. 39 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-03-28 13:07:27,335 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 181 proven. 39 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-03-28 13:07:27,518 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:27,518 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2018-03-28 13:07:27,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-03-28 13:07:27,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-03-28 13:07:27,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-03-28 13:07:27,519 INFO L87 Difference]: Start difference. First operand 203 states and 213 transitions. Second operand 23 states. [2018-03-28 13:07:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:28,697 INFO L93 Difference]: Finished difference Result 217 states and 227 transitions. [2018-03-28 13:07:28,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-03-28 13:07:28,698 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 135 [2018-03-28 13:07:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:28,699 INFO L225 Difference]: With dead ends: 217 [2018-03-28 13:07:28,699 INFO L226 Difference]: Without dead ends: 216 [2018-03-28 13:07:28,700 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=462, Invalid=1344, Unknown=0, NotChecked=0, Total=1806 [2018-03-28 13:07:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-03-28 13:07:28,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 204. [2018-03-28 13:07:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-03-28 13:07:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 211 transitions. [2018-03-28 13:07:28,711 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 211 transitions. Word has length 135 [2018-03-28 13:07:28,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:28,711 INFO L459 AbstractCegarLoop]: Abstraction has 204 states and 211 transitions. [2018-03-28 13:07:28,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-03-28 13:07:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 211 transitions. [2018-03-28 13:07:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-03-28 13:07:28,713 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:28,713 INFO L355 BasicCegarLoop]: trace histogram [11, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2018-03-28 13:07:28,713 INFO L408 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:28,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1502561417, now seen corresponding path program 3 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 [2018-03-28 13:07:28,719 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:28,751 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 209 proven. 33 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-03-28 13:07:28,853 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 209 proven. 33 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-03-28 13:07:29,045 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:29,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2018-03-28 13:07:29,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-03-28 13:07:29,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-03-28 13:07:29,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2018-03-28 13:07:29,046 INFO L87 Difference]: Start difference. First operand 204 states and 211 transitions. Second operand 24 states. [2018-03-28 13:07:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:29,329 INFO L93 Difference]: Finished difference Result 324 states and 337 transitions. [2018-03-28 13:07:29,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-03-28 13:07:29,329 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 153 [2018-03-28 13:07:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:29,331 INFO L225 Difference]: With dead ends: 324 [2018-03-28 13:07:29,331 INFO L226 Difference]: Without dead ends: 214 [2018-03-28 13:07:29,332 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 277 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=1060, Unknown=0, NotChecked=0, Total=1332 [2018-03-28 13:07:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-03-28 13:07:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 204. [2018-03-28 13:07:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-03-28 13:07:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 210 transitions. [2018-03-28 13:07:29,343 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 210 transitions. Word has length 153 [2018-03-28 13:07:29,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:29,343 INFO L459 AbstractCegarLoop]: Abstraction has 204 states and 210 transitions. [2018-03-28 13:07:29,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-03-28 13:07:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 210 transitions. [2018-03-28 13:07:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-03-28 13:07:29,345 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:29,345 INFO L355 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2018-03-28 13:07:29,345 INFO L408 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1193835928, now seen corresponding path program 4 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 [2018-03-28 13:07:29,361 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:29,397 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-03-28 13:07:29,621 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-03-28 13:07:29,710 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:29,710 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-03-28 13:07:29,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-28 13:07:29,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-28 13:07:29,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-03-28 13:07:29,712 INFO L87 Difference]: Start difference. First operand 204 states and 210 transitions. Second operand 16 states. [2018-03-28 13:07:29,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:29,892 INFO L93 Difference]: Finished difference Result 274 states and 288 transitions. [2018-03-28 13:07:29,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-03-28 13:07:29,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 162 [2018-03-28 13:07:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:29,894 INFO L225 Difference]: With dead ends: 274 [2018-03-28 13:07:29,895 INFO L226 Difference]: Without dead ends: 254 [2018-03-28 13:07:29,895 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-03-28 13:07:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-03-28 13:07:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 244. [2018-03-28 13:07:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-03-28 13:07:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 254 transitions. [2018-03-28 13:07:29,906 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 254 transitions. Word has length 162 [2018-03-28 13:07:29,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:29,907 INFO L459 AbstractCegarLoop]: Abstraction has 244 states and 254 transitions. [2018-03-28 13:07:29,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-28 13:07:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 254 transitions. [2018-03-28 13:07:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-03-28 13:07:29,907 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:29,908 INFO L355 BasicCegarLoop]: trace histogram [15, 13, 12, 12, 12, 12, 12, 12, 12, 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] [2018-03-28 13:07:29,908 INFO L408 AbstractCegarLoop]: === Iteration 20 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:29,908 INFO L82 PathProgramCache]: Analyzing trace with hash 600711107, now seen corresponding path program 5 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 [2018-03-28 13:07:29,914 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:29,954 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 552 proven. 18 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-03-28 13:07:30,170 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 552 proven. 18 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-03-28 13:07:30,681 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:30,681 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 27 [2018-03-28 13:07:30,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-03-28 13:07:30,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-03-28 13:07:30,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2018-03-28 13:07:30,683 INFO L87 Difference]: Start difference. First operand 244 states and 254 transitions. Second operand 27 states. [2018-03-28 13:07:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:31,524 INFO L93 Difference]: Finished difference Result 443 states and 463 transitions. [2018-03-28 13:07:31,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-03-28 13:07:31,525 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2018-03-28 13:07:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:31,527 INFO L225 Difference]: With dead ends: 443 [2018-03-28 13:07:31,527 INFO L226 Difference]: Without dead ends: 298 [2018-03-28 13:07:31,528 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 307 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=437, Invalid=1725, Unknown=0, NotChecked=0, Total=2162 [2018-03-28 13:07:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-03-28 13:07:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 290. [2018-03-28 13:07:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-03-28 13:07:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 299 transitions. [2018-03-28 13:07:31,540 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 299 transitions. Word has length 170 [2018-03-28 13:07:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:31,540 INFO L459 AbstractCegarLoop]: Abstraction has 290 states and 299 transitions. [2018-03-28 13:07:31,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-03-28 13:07:31,540 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 299 transitions. [2018-03-28 13:07:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-03-28 13:07:31,541 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:31,541 INFO L355 BasicCegarLoop]: trace histogram [20, 17, 16, 16, 16, 16, 16, 16, 16, 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] [2018-03-28 13:07:31,541 INFO L408 AbstractCegarLoop]: === Iteration 21 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:31,542 INFO L82 PathProgramCache]: Analyzing trace with hash 689205808, now seen corresponding path program 6 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 [2018-03-28 13:07:31,549 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:31,610 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 856 proven. 42 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2018-03-28 13:07:32,211 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 856 proven. 42 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2018-03-28 13:07:32,490 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:32,491 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 33 [2018-03-28 13:07:32,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-03-28 13:07:32,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-03-28 13:07:32,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2018-03-28 13:07:32,492 INFO L87 Difference]: Start difference. First operand 290 states and 299 transitions. Second operand 33 states. [2018-03-28 13:07:33,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:33,159 INFO L93 Difference]: Finished difference Result 491 states and 510 transitions. [2018-03-28 13:07:33,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-03-28 13:07:33,160 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 226 [2018-03-28 13:07:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:33,161 INFO L225 Difference]: With dead ends: 491 [2018-03-28 13:07:33,161 INFO L226 Difference]: Without dead ends: 356 [2018-03-28 13:07:33,163 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 411 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=640, Invalid=2782, Unknown=0, NotChecked=0, Total=3422 [2018-03-28 13:07:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-03-28 13:07:33,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 345. [2018-03-28 13:07:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-03-28 13:07:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 354 transitions. [2018-03-28 13:07:33,174 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 354 transitions. Word has length 226 [2018-03-28 13:07:33,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:33,174 INFO L459 AbstractCegarLoop]: Abstraction has 345 states and 354 transitions. [2018-03-28 13:07:33,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-03-28 13:07:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 354 transitions. [2018-03-28 13:07:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-03-28 13:07:33,176 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:33,176 INFO L355 BasicCegarLoop]: trace histogram [25, 21, 20, 20, 20, 20, 20, 20, 20, 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] [2018-03-28 13:07:33,176 INFO L408 AbstractCegarLoop]: === Iteration 22 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:33,176 INFO L82 PathProgramCache]: Analyzing trace with hash 256154013, now seen corresponding path program 7 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 [2018-03-28 13:07:33,182 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:33,244 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1408 proven. 62 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2018-03-28 13:07:33,918 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1408 proven. 62 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2018-03-28 13:07:34,494 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:34,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 30 [2018-03-28 13:07:34,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-03-28 13:07:34,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-03-28 13:07:34,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2018-03-28 13:07:34,496 INFO L87 Difference]: Start difference. First operand 345 states and 354 transitions. Second operand 30 states. [2018-03-28 13:07:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:35,705 INFO L93 Difference]: Finished difference Result 496 states and 514 transitions. [2018-03-28 13:07:35,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-03-28 13:07:35,708 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 282 [2018-03-28 13:07:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:35,711 INFO L225 Difference]: With dead ends: 496 [2018-03-28 13:07:35,711 INFO L226 Difference]: Without dead ends: 355 [2018-03-28 13:07:35,713 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 527 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=426, Invalid=1830, Unknown=0, NotChecked=0, Total=2256 [2018-03-28 13:07:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-03-28 13:07:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 345. [2018-03-28 13:07:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-03-28 13:07:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2018-03-28 13:07:35,729 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 282 [2018-03-28 13:07:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:35,730 INFO L459 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2018-03-28 13:07:35,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-03-28 13:07:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2018-03-28 13:07:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-03-28 13:07:35,732 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:35,733 INFO L355 BasicCegarLoop]: trace histogram [26, 22, 21, 21, 21, 21, 21, 21, 21, 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] [2018-03-28 13:07:35,733 INFO L408 AbstractCegarLoop]: === Iteration 23 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:35,733 INFO L82 PathProgramCache]: Analyzing trace with hash -421007262, now seen corresponding path program 8 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 [2018-03-28 13:07:35,749 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:35,842 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 1217 proven. 76 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-03-28 13:07:36,991 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 1217 proven. 76 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-03-28 13:07:37,368 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:37,368 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 39 [2018-03-28 13:07:37,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-03-28 13:07:37,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-03-28 13:07:37,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1257, Unknown=0, NotChecked=0, Total=1482 [2018-03-28 13:07:37,369 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand 39 states. [2018-03-28 13:07:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:38,348 INFO L93 Difference]: Finished difference Result 545 states and 560 transitions. [2018-03-28 13:07:38,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-03-28 13:07:38,348 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 291 [2018-03-28 13:07:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:38,350 INFO L225 Difference]: With dead ends: 545 [2018-03-28 13:07:38,350 INFO L226 Difference]: Without dead ends: 420 [2018-03-28 13:07:38,351 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 533 SyntacticMatches, 11 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2018-03-28 13:07:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-03-28 13:07:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 409. [2018-03-28 13:07:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-03-28 13:07:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 416 transitions. [2018-03-28 13:07:38,363 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 416 transitions. Word has length 291 [2018-03-28 13:07:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:38,364 INFO L459 AbstractCegarLoop]: Abstraction has 409 states and 416 transitions. [2018-03-28 13:07:38,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-03-28 13:07:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 416 transitions. [2018-03-28 13:07:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-03-28 13:07:38,365 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:38,366 INFO L355 BasicCegarLoop]: trace histogram [32, 27, 26, 26, 26, 26, 26, 26, 26, 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] [2018-03-28 13:07:38,366 INFO L408 AbstractCegarLoop]: === Iteration 24 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:38,366 INFO L82 PathProgramCache]: Analyzing trace with hash 498911344, now seen corresponding path program 9 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 [2018-03-28 13:07:38,376 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:38,454 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3518 backedges. 2209 proven. 100 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2018-03-28 13:07:38,811 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3518 backedges. 2209 proven. 100 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2018-03-28 13:07:39,263 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:39,264 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 36 [2018-03-28 13:07:39,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-03-28 13:07:39,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-03-28 13:07:39,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2018-03-28 13:07:39,265 INFO L87 Difference]: Start difference. First operand 409 states and 416 transitions. Second operand 36 states. [2018-03-28 13:07:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:39,865 INFO L93 Difference]: Finished difference Result 550 states and 563 transitions. [2018-03-28 13:07:39,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-03-28 13:07:39,865 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 356 [2018-03-28 13:07:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:39,867 INFO L225 Difference]: With dead ends: 550 [2018-03-28 13:07:39,867 INFO L226 Difference]: Without dead ends: 419 [2018-03-28 13:07:39,868 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 667 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=614, Invalid=2808, Unknown=0, NotChecked=0, Total=3422 [2018-03-28 13:07:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-03-28 13:07:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2018-03-28 13:07:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-03-28 13:07:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 414 transitions. [2018-03-28 13:07:39,878 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 414 transitions. Word has length 356 [2018-03-28 13:07:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:39,879 INFO L459 AbstractCegarLoop]: Abstraction has 409 states and 414 transitions. [2018-03-28 13:07:39,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-03-28 13:07:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 414 transitions. [2018-03-28 13:07:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-03-28 13:07:39,880 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:39,880 INFO L355 BasicCegarLoop]: trace histogram [33, 28, 27, 27, 27, 27, 27, 27, 27, 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] [2018-03-28 13:07:39,880 INFO L408 AbstractCegarLoop]: === Iteration 25 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:39,881 INFO L82 PathProgramCache]: Analyzing trace with hash 709607151, now seen corresponding path program 10 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 [2018-03-28 13:07:39,889 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:39,971 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3765 backedges. 1635 proven. 120 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked. [2018-03-28 13:07:40,698 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3765 backedges. 1635 proven. 120 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked. [2018-03-28 13:07:41,052 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:41,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 45 [2018-03-28 13:07:41,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-03-28 13:07:41,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-03-28 13:07:41,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2018-03-28 13:07:41,054 INFO L87 Difference]: Start difference. First operand 409 states and 414 transitions. Second operand 45 states. [2018-03-28 13:07:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:41,991 INFO L93 Difference]: Finished difference Result 608 states and 619 transitions. [2018-03-28 13:07:41,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-03-28 13:07:41,991 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 365 [2018-03-28 13:07:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:41,994 INFO L225 Difference]: With dead ends: 608 [2018-03-28 13:07:41,994 INFO L226 Difference]: Without dead ends: 493 [2018-03-28 13:07:41,997 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 673 SyntacticMatches, 13 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1160, Invalid=5646, Unknown=0, NotChecked=0, Total=6806 [2018-03-28 13:07:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-03-28 13:07:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 482. [2018-03-28 13:07:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-03-28 13:07:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 487 transitions. [2018-03-28 13:07:42,015 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 487 transitions. Word has length 365 [2018-03-28 13:07:42,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:42,017 INFO L459 AbstractCegarLoop]: Abstraction has 482 states and 487 transitions. [2018-03-28 13:07:42,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-03-28 13:07:42,017 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 487 transitions. [2018-03-28 13:07:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-03-28 13:07:42,020 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:42,021 INFO L355 BasicCegarLoop]: trace histogram [40, 34, 33, 33, 33, 33, 33, 33, 33, 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] [2018-03-28 13:07:42,021 INFO L408 AbstractCegarLoop]: === Iteration 26 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:42,021 INFO L82 PathProgramCache]: Analyzing trace with hash -750544580, now seen corresponding path program 11 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 [2018-03-28 13:07:42,033 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:42,145 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5613 backedges. 3236 proven. 147 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-03-28 13:07:42,552 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5613 backedges. 3236 proven. 147 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-03-28 13:07:43,169 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:43,169 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 42 [2018-03-28 13:07:43,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-03-28 13:07:43,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-03-28 13:07:43,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2018-03-28 13:07:43,171 INFO L87 Difference]: Start difference. First operand 482 states and 487 transitions. Second operand 42 states. [2018-03-28 13:07:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:43,715 INFO L93 Difference]: Finished difference Result 617 states and 625 transitions. [2018-03-28 13:07:43,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-03-28 13:07:43,715 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 439 [2018-03-28 13:07:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:43,717 INFO L225 Difference]: With dead ends: 617 [2018-03-28 13:07:43,717 INFO L226 Difference]: Without dead ends: 496 [2018-03-28 13:07:43,720 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 825 SyntacticMatches, 13 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=836, Invalid=3994, Unknown=0, NotChecked=0, Total=4830 [2018-03-28 13:07:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2018-03-28 13:07:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 482. [2018-03-28 13:07:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-03-28 13:07:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 485 transitions. [2018-03-28 13:07:43,738 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 485 transitions. Word has length 439 [2018-03-28 13:07:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:43,739 INFO L459 AbstractCegarLoop]: Abstraction has 482 states and 485 transitions. [2018-03-28 13:07:43,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-03-28 13:07:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 485 transitions. [2018-03-28 13:07:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-03-28 13:07:43,743 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:43,743 INFO L355 BasicCegarLoop]: trace histogram [41, 35, 34, 34, 34, 34, 34, 34, 34, 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] [2018-03-28 13:07:43,743 INFO L408 AbstractCegarLoop]: === Iteration 27 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:43,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1577774173, now seen corresponding path program 12 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 [2018-03-28 13:07:43,752 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:43,833 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5925 backedges. 1878 proven. 210 refuted. 0 times theorem prover too weak. 3837 trivial. 0 not checked. [2018-03-28 13:07:44,043 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5925 backedges. 1878 proven. 210 refuted. 0 times theorem prover too weak. 3837 trivial. 0 not checked. [2018-03-28 13:07:44,405 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:44,406 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-03-28 13:07:44,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-03-28 13:07:44,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-03-28 13:07:44,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-03-28 13:07:44,407 INFO L87 Difference]: Start difference. First operand 482 states and 485 transitions. Second operand 32 states. [2018-03-28 13:07:45,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:45,804 INFO L93 Difference]: Finished difference Result 591 states and 609 transitions. [2018-03-28 13:07:45,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-03-28 13:07:45,805 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 448 [2018-03-28 13:07:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:45,806 INFO L225 Difference]: With dead ends: 591 [2018-03-28 13:07:45,807 INFO L226 Difference]: Without dead ends: 590 [2018-03-28 13:07:45,808 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-03-28 13:07:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2018-03-28 13:07:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 553. [2018-03-28 13:07:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2018-03-28 13:07:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 571 transitions. [2018-03-28 13:07:45,823 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 571 transitions. Word has length 448 [2018-03-28 13:07:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:45,823 INFO L459 AbstractCegarLoop]: Abstraction has 553 states and 571 transitions. [2018-03-28 13:07:45,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-03-28 13:07:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 571 transitions. [2018-03-28 13:07:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-03-28 13:07:45,825 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:45,826 INFO L355 BasicCegarLoop]: trace histogram [41, 35, 35, 34, 34, 34, 34, 34, 34, 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] [2018-03-28 13:07:45,826 INFO L408 AbstractCegarLoop]: === Iteration 28 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:45,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1666359055, now seen corresponding path program 2 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 [2018-03-28 13:07:45,834 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:45,927 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:45,934 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 [2018-03-28 13:07:45,934 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-28 13:07:45,984 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-28 13:07:45,984 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-28 13:07:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 1935 proven. 217 refuted. 0 times theorem prover too weak. 3807 trivial. 0 not checked. [2018-03-28 13:07:46,774 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 1935 proven. 217 refuted. 0 times theorem prover too weak. 3807 trivial. 0 not checked. [2018-03-28 13:07:47,523 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:47,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2018-03-28 13:07:47,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-03-28 13:07:47,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-03-28 13:07:47,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2018-03-28 13:07:47,525 INFO L87 Difference]: Start difference. First operand 553 states and 571 transitions. Second operand 39 states. [2018-03-28 13:07:50,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:50,256 INFO L93 Difference]: Finished difference Result 579 states and 597 transitions. [2018-03-28 13:07:50,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-03-28 13:07:50,256 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 449 [2018-03-28 13:07:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:50,258 INFO L225 Difference]: With dead ends: 579 [2018-03-28 13:07:50,258 INFO L226 Difference]: Without dead ends: 578 [2018-03-28 13:07:50,260 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 850 SyntacticMatches, 11 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1574, Invalid=5232, Unknown=0, NotChecked=0, Total=6806 [2018-03-28 13:07:50,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2018-03-28 13:07:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 554. [2018-03-28 13:07:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-03-28 13:07:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 565 transitions. [2018-03-28 13:07:50,280 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 565 transitions. Word has length 449 [2018-03-28 13:07:50,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:50,280 INFO L459 AbstractCegarLoop]: Abstraction has 554 states and 565 transitions. [2018-03-28 13:07:50,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-03-28 13:07:50,280 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 565 transitions. [2018-03-28 13:07:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-03-28 13:07:50,284 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:50,284 INFO L355 BasicCegarLoop]: trace histogram [41, 34, 34, 34, 34, 34, 34, 34, 34, 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] [2018-03-28 13:07:50,284 INFO L408 AbstractCegarLoop]: === Iteration 29 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:50,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1020846633, now seen corresponding path program 5 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 [2018-03-28 13:07:50,301 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:50,411 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 2111 proven. 203 refuted. 0 times theorem prover too weak. 3645 trivial. 0 not checked. [2018-03-28 13:07:51,069 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 2111 proven. 203 refuted. 0 times theorem prover too weak. 3645 trivial. 0 not checked. [2018-03-28 13:07:51,872 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:51,873 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 48 [2018-03-28 13:07:51,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-03-28 13:07:51,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-03-28 13:07:51,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1918, Unknown=0, NotChecked=0, Total=2256 [2018-03-28 13:07:51,874 INFO L87 Difference]: Start difference. First operand 554 states and 565 transitions. Second operand 48 states. [2018-03-28 13:07:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:52,550 INFO L93 Difference]: Finished difference Result 746 states and 767 transitions. [2018-03-28 13:07:52,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-03-28 13:07:52,550 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 467 [2018-03-28 13:07:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:52,551 INFO L225 Difference]: With dead ends: 746 [2018-03-28 13:07:52,552 INFO L226 Difference]: Without dead ends: 564 [2018-03-28 13:07:52,552 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 873 SyntacticMatches, 15 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1092, Invalid=5388, Unknown=0, NotChecked=0, Total=6480 [2018-03-28 13:07:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2018-03-28 13:07:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 554. [2018-03-28 13:07:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-03-28 13:07:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 564 transitions. [2018-03-28 13:07:52,569 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 564 transitions. Word has length 467 [2018-03-28 13:07:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:52,570 INFO L459 AbstractCegarLoop]: Abstraction has 554 states and 564 transitions. [2018-03-28 13:07:52,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-03-28 13:07:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 564 transitions. [2018-03-28 13:07:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-03-28 13:07:52,573 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:52,574 INFO L355 BasicCegarLoop]: trace histogram [42, 35, 35, 35, 35, 35, 35, 35, 35, 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] [2018-03-28 13:07:52,574 INFO L408 AbstractCegarLoop]: === Iteration 30 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:52,574 INFO L82 PathProgramCache]: Analyzing trace with hash -804600008, now seen corresponding path program 6 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 [2018-03-28 13:07:52,583 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:52,700 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6279 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 6055 trivial. 0 not checked. [2018-03-28 13:07:52,972 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6279 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 6055 trivial. 0 not checked. [2018-03-28 13:07:53,371 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:53,371 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-03-28 13:07:53,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-03-28 13:07:53,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-03-28 13:07:53,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-03-28 13:07:53,373 INFO L87 Difference]: Start difference. First operand 554 states and 564 transitions. Second operand 32 states. [2018-03-28 13:07:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:53,848 INFO L93 Difference]: Finished difference Result 664 states and 690 transitions. [2018-03-28 13:07:53,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-03-28 13:07:53,848 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 476 [2018-03-28 13:07:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:53,850 INFO L225 Difference]: With dead ends: 664 [2018-03-28 13:07:53,851 INFO L226 Difference]: Without dead ends: 644 [2018-03-28 13:07:53,851 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 921 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-03-28 13:07:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-03-28 13:07:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 634. [2018-03-28 13:07:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2018-03-28 13:07:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 652 transitions. [2018-03-28 13:07:53,873 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 652 transitions. Word has length 476 [2018-03-28 13:07:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:53,874 INFO L459 AbstractCegarLoop]: Abstraction has 634 states and 652 transitions. [2018-03-28 13:07:53,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-03-28 13:07:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 652 transitions. [2018-03-28 13:07:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-03-28 13:07:53,879 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:53,879 INFO L355 BasicCegarLoop]: trace histogram [49, 43, 42, 42, 42, 42, 42, 42, 42, 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] [2018-03-28 13:07:53,879 INFO L408 AbstractCegarLoop]: === Iteration 31 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:53,879 INFO L82 PathProgramCache]: Analyzing trace with hash 791453475, now seen corresponding path program 13 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 [2018-03-28 13:07:53,888 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:54,026 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8745 backedges. 4742 proven. 174 refuted. 0 times theorem prover too weak. 3829 trivial. 0 not checked. [2018-03-28 13:07:54,547 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8745 backedges. 4742 proven. 174 refuted. 0 times theorem prover too weak. 3829 trivial. 0 not checked. [2018-03-28 13:07:55,069 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:55,069 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 51 [2018-03-28 13:07:55,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-03-28 13:07:55,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-03-28 13:07:55,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=2189, Unknown=0, NotChecked=0, Total=2550 [2018-03-28 13:07:55,071 INFO L87 Difference]: Start difference. First operand 634 states and 652 transitions. Second operand 51 states. [2018-03-28 13:07:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:07:56,370 INFO L93 Difference]: Finished difference Result 981 states and 1017 transitions. [2018-03-28 13:07:56,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-03-28 13:07:56,370 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 520 [2018-03-28 13:07:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:07:56,372 INFO L225 Difference]: With dead ends: 981 [2018-03-28 13:07:56,372 INFO L226 Difference]: Without dead ends: 724 [2018-03-28 13:07:56,375 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 975 SyntacticMatches, 15 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1477, Invalid=7453, Unknown=0, NotChecked=0, Total=8930 [2018-03-28 13:07:56,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2018-03-28 13:07:56,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 716. [2018-03-28 13:07:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2018-03-28 13:07:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 733 transitions. [2018-03-28 13:07:56,391 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 733 transitions. Word has length 520 [2018-03-28 13:07:56,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:07:56,391 INFO L459 AbstractCegarLoop]: Abstraction has 716 states and 733 transitions. [2018-03-28 13:07:56,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-03-28 13:07:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 733 transitions. [2018-03-28 13:07:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-03-28 13:07:56,395 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:07:56,395 INFO L355 BasicCegarLoop]: trace histogram [58, 51, 50, 50, 50, 50, 50, 50, 50, 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] [2018-03-28 13:07:56,395 INFO L408 AbstractCegarLoop]: === Iteration 32 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:07:56,395 INFO L82 PathProgramCache]: Analyzing trace with hash -390012336, now seen corresponding path program 14 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 [2018-03-28 13:07:56,401 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:07:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:07:56,523 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:07:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12372 backedges. 5938 proven. 238 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2018-03-28 13:07:57,333 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:07:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12372 backedges. 5938 proven. 238 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2018-03-28 13:07:58,801 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:07:58,802 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 57 [2018-03-28 13:07:58,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-03-28 13:07:58,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-03-28 13:07:58,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2751, Unknown=0, NotChecked=0, Total=3192 [2018-03-28 13:07:58,804 INFO L87 Difference]: Start difference. First operand 716 states and 733 transitions. Second operand 57 states. [2018-03-28 13:08:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:00,069 INFO L93 Difference]: Finished difference Result 1065 states and 1100 transitions. [2018-03-28 13:08:00,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-03-28 13:08:00,069 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 612 [2018-03-28 13:08:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:00,073 INFO L225 Difference]: With dead ends: 1065 [2018-03-28 13:08:00,073 INFO L226 Difference]: Without dead ends: 818 [2018-03-28 13:08:00,077 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1273 GetRequests, 1151 SyntacticMatches, 17 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2844 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1832, Invalid=9510, Unknown=0, NotChecked=0, Total=11342 [2018-03-28 13:08:00,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2018-03-28 13:08:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 807. [2018-03-28 13:08:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-03-28 13:08:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 824 transitions. [2018-03-28 13:08:00,114 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 824 transitions. Word has length 612 [2018-03-28 13:08:00,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:00,115 INFO L459 AbstractCegarLoop]: Abstraction has 807 states and 824 transitions. [2018-03-28 13:08:00,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-03-28 13:08:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 824 transitions. [2018-03-28 13:08:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-03-28 13:08:00,121 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:00,122 INFO L355 BasicCegarLoop]: trace histogram [67, 59, 58, 58, 58, 58, 58, 58, 58, 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] [2018-03-28 13:08:00,122 INFO L408 AbstractCegarLoop]: === Iteration 33 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:00,122 INFO L82 PathProgramCache]: Analyzing trace with hash -727062531, now seen corresponding path program 15 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 [2018-03-28 13:08:00,130 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:00,290 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16627 backedges. 9300 proven. 268 refuted. 0 times theorem prover too weak. 7059 trivial. 0 not checked. [2018-03-28 13:08:00,951 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16627 backedges. 9300 proven. 268 refuted. 0 times theorem prover too weak. 7059 trivial. 0 not checked. [2018-03-28 13:08:01,942 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:01,942 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 54 [2018-03-28 13:08:01,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-03-28 13:08:01,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-03-28 13:08:01,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2446, Unknown=0, NotChecked=0, Total=2862 [2018-03-28 13:08:01,944 INFO L87 Difference]: Start difference. First operand 807 states and 824 transitions. Second operand 54 states. [2018-03-28 13:08:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:02,721 INFO L93 Difference]: Finished difference Result 1070 states and 1108 transitions. [2018-03-28 13:08:02,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-03-28 13:08:02,721 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 704 [2018-03-28 13:08:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:02,723 INFO L225 Difference]: With dead ends: 1070 [2018-03-28 13:08:02,723 INFO L226 Difference]: Without dead ends: 817 [2018-03-28 13:08:02,727 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1446 GetRequests, 1339 SyntacticMatches, 17 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1382, Invalid=6990, Unknown=0, NotChecked=0, Total=8372 [2018-03-28 13:08:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2018-03-28 13:08:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 807. [2018-03-28 13:08:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-03-28 13:08:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 822 transitions. [2018-03-28 13:08:02,753 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 822 transitions. Word has length 704 [2018-03-28 13:08:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:02,753 INFO L459 AbstractCegarLoop]: Abstraction has 807 states and 822 transitions. [2018-03-28 13:08:02,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-03-28 13:08:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 822 transitions. [2018-03-28 13:08:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2018-03-28 13:08:02,760 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:02,760 INFO L355 BasicCegarLoop]: trace histogram [68, 60, 59, 59, 59, 59, 59, 59, 59, 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] [2018-03-28 13:08:02,760 INFO L408 AbstractCegarLoop]: === Iteration 34 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:02,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1139923966, now seen corresponding path program 16 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 [2018-03-28 13:08:02,770 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:02,904 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17168 backedges. 7263 proven. 312 refuted. 0 times theorem prover too weak. 9593 trivial. 0 not checked. [2018-03-28 13:08:03,533 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 17168 backedges. 7263 proven. 312 refuted. 0 times theorem prover too weak. 9593 trivial. 0 not checked. [2018-03-28 13:08:04,487 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:04,487 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 63 [2018-03-28 13:08:04,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-03-28 13:08:04,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-03-28 13:08:04,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=3377, Unknown=0, NotChecked=0, Total=3906 [2018-03-28 13:08:04,489 INFO L87 Difference]: Start difference. First operand 807 states and 822 transitions. Second operand 63 states. [2018-03-28 13:08:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:06,199 INFO L93 Difference]: Finished difference Result 1155 states and 1186 transitions. [2018-03-28 13:08:06,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-03-28 13:08:06,199 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 713 [2018-03-28 13:08:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:06,202 INFO L225 Difference]: With dead ends: 1155 [2018-03-28 13:08:06,202 INFO L226 Difference]: Without dead ends: 918 [2018-03-28 13:08:06,204 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1481 GetRequests, 1345 SyntacticMatches, 19 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3584 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2225, Invalid=11817, Unknown=0, NotChecked=0, Total=14042 [2018-03-28 13:08:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2018-03-28 13:08:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 907. [2018-03-28 13:08:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2018-03-28 13:08:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 922 transitions. [2018-03-28 13:08:06,232 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 922 transitions. Word has length 713 [2018-03-28 13:08:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:06,233 INFO L459 AbstractCegarLoop]: Abstraction has 907 states and 922 transitions. [2018-03-28 13:08:06,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-03-28 13:08:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 922 transitions. [2018-03-28 13:08:06,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-03-28 13:08:06,240 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:06,241 INFO L355 BasicCegarLoop]: trace histogram [78, 69, 68, 68, 68, 68, 68, 68, 68, 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] [2018-03-28 13:08:06,241 INFO L408 AbstractCegarLoop]: === Iteration 35 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:06,241 INFO L82 PathProgramCache]: Analyzing trace with hash 94566800, now seen corresponding path program 17 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 [2018-03-28 13:08:06,250 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:06,411 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 22749 backedges. 11903 proven. 342 refuted. 0 times theorem prover too weak. 10504 trivial. 0 not checked. [2018-03-28 13:08:07,303 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22749 backedges. 11903 proven. 342 refuted. 0 times theorem prover too weak. 10504 trivial. 0 not checked. [2018-03-28 13:08:08,179 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:08,180 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 60 [2018-03-28 13:08:08,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-03-28 13:08:08,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-03-28 13:08:08,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=3038, Unknown=0, NotChecked=0, Total=3540 [2018-03-28 13:08:08,181 INFO L87 Difference]: Start difference. First operand 907 states and 922 transitions. Second operand 60 states. [2018-03-28 13:08:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:09,093 INFO L93 Difference]: Finished difference Result 1160 states and 1193 transitions. [2018-03-28 13:08:09,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-03-28 13:08:09,094 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 814 [2018-03-28 13:08:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:09,096 INFO L225 Difference]: With dead ends: 1160 [2018-03-28 13:08:09,096 INFO L226 Difference]: Without dead ends: 917 [2018-03-28 13:08:09,098 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1551 SyntacticMatches, 19 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1706, Invalid=8800, Unknown=0, NotChecked=0, Total=10506 [2018-03-28 13:08:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2018-03-28 13:08:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 907. [2018-03-28 13:08:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2018-03-28 13:08:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 920 transitions. [2018-03-28 13:08:09,115 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 920 transitions. Word has length 814 [2018-03-28 13:08:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:09,115 INFO L459 AbstractCegarLoop]: Abstraction has 907 states and 920 transitions. [2018-03-28 13:08:09,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-03-28 13:08:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 920 transitions. [2018-03-28 13:08:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2018-03-28 13:08:09,121 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:09,121 INFO L355 BasicCegarLoop]: trace histogram [79, 70, 69, 69, 69, 69, 69, 69, 69, 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] [2018-03-28 13:08:09,121 INFO L408 AbstractCegarLoop]: === Iteration 36 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:09,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1176229937, now seen corresponding path program 18 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 [2018-03-28 13:08:09,127 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:09,291 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 23382 backedges. 8717 proven. 396 refuted. 0 times theorem prover too weak. 14269 trivial. 0 not checked. [2018-03-28 13:08:10,111 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 23382 backedges. 8717 proven. 396 refuted. 0 times theorem prover too weak. 14269 trivial. 0 not checked. [2018-03-28 13:08:11,007 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:11,007 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 69 [2018-03-28 13:08:11,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-03-28 13:08:11,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-03-28 13:08:11,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=4067, Unknown=0, NotChecked=0, Total=4692 [2018-03-28 13:08:11,009 INFO L87 Difference]: Start difference. First operand 907 states and 920 transitions. Second operand 69 states. [2018-03-28 13:08:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:12,696 INFO L93 Difference]: Finished difference Result 1254 states and 1281 transitions. [2018-03-28 13:08:12,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-03-28 13:08:12,697 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 823 [2018-03-28 13:08:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:12,699 INFO L225 Difference]: With dead ends: 1254 [2018-03-28 13:08:12,699 INFO L226 Difference]: Without dead ends: 1027 [2018-03-28 13:08:12,701 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1707 GetRequests, 1557 SyntacticMatches, 21 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4409 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2656, Invalid=14374, Unknown=0, NotChecked=0, Total=17030 [2018-03-28 13:08:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2018-03-28 13:08:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1016. [2018-03-28 13:08:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-03-28 13:08:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1029 transitions. [2018-03-28 13:08:12,719 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1029 transitions. Word has length 823 [2018-03-28 13:08:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:12,720 INFO L459 AbstractCegarLoop]: Abstraction has 1016 states and 1029 transitions. [2018-03-28 13:08:12,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-03-28 13:08:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1029 transitions. [2018-03-28 13:08:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2018-03-28 13:08:12,724 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:12,725 INFO L355 BasicCegarLoop]: trace histogram [90, 80, 79, 79, 79, 79, 79, 79, 79, 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] [2018-03-28 13:08:12,725 INFO L408 AbstractCegarLoop]: === Iteration 37 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:12,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1483823908, now seen corresponding path program 19 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 [2018-03-28 13:08:12,731 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:12,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30556 backedges. 14912 proven. 425 refuted. 0 times theorem prover too weak. 15219 trivial. 0 not checked. [2018-03-28 13:08:13,703 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 30556 backedges. 14912 proven. 425 refuted. 0 times theorem prover too weak. 15219 trivial. 0 not checked. [2018-03-28 13:08:15,458 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:15,459 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 66 [2018-03-28 13:08:15,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-03-28 13:08:15,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-03-28 13:08:15,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=3694, Unknown=0, NotChecked=0, Total=4290 [2018-03-28 13:08:15,460 INFO L87 Difference]: Start difference. First operand 1016 states and 1029 transitions. Second operand 66 states. [2018-03-28 13:08:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:16,547 INFO L93 Difference]: Finished difference Result 1259 states and 1287 transitions. [2018-03-28 13:08:16,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-03-28 13:08:16,548 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 933 [2018-03-28 13:08:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:16,550 INFO L225 Difference]: With dead ends: 1259 [2018-03-28 13:08:16,550 INFO L226 Difference]: Without dead ends: 1026 [2018-03-28 13:08:16,552 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1914 GetRequests, 1781 SyntacticMatches, 21 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4865 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2064, Invalid=10818, Unknown=0, NotChecked=0, Total=12882 [2018-03-28 13:08:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2018-03-28 13:08:16,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1016. [2018-03-28 13:08:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-03-28 13:08:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1027 transitions. [2018-03-28 13:08:16,573 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1027 transitions. Word has length 933 [2018-03-28 13:08:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:16,574 INFO L459 AbstractCegarLoop]: Abstraction has 1016 states and 1027 transitions. [2018-03-28 13:08:16,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-03-28 13:08:16,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1027 transitions. [2018-03-28 13:08:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2018-03-28 13:08:16,582 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:16,583 INFO L355 BasicCegarLoop]: trace histogram [91, 81, 80, 80, 80, 80, 80, 80, 80, 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] [2018-03-28 13:08:16,583 INFO L408 AbstractCegarLoop]: === Iteration 38 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:16,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1531547133, now seen corresponding path program 20 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 [2018-03-28 13:08:16,591 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:16,748 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 31290 backedges. 10300 proven. 490 refuted. 0 times theorem prover too weak. 20500 trivial. 0 not checked. [2018-03-28 13:08:17,829 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 31290 backedges. 10300 proven. 490 refuted. 0 times theorem prover too weak. 20500 trivial. 0 not checked. [2018-03-28 13:08:18,920 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:18,920 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 75 [2018-03-28 13:08:18,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-03-28 13:08:18,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-03-28 13:08:18,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=729, Invalid=4821, Unknown=0, NotChecked=0, Total=5550 [2018-03-28 13:08:18,921 INFO L87 Difference]: Start difference. First operand 1016 states and 1027 transitions. Second operand 75 states. [2018-03-28 13:08:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:20,974 INFO L93 Difference]: Finished difference Result 1362 states and 1385 transitions. [2018-03-28 13:08:20,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-03-28 13:08:20,974 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 942 [2018-03-28 13:08:20,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:20,977 INFO L225 Difference]: With dead ends: 1362 [2018-03-28 13:08:20,977 INFO L226 Difference]: Without dead ends: 1145 [2018-03-28 13:08:20,979 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1951 GetRequests, 1787 SyntacticMatches, 23 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5319 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3125, Invalid=17181, Unknown=0, NotChecked=0, Total=20306 [2018-03-28 13:08:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2018-03-28 13:08:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1134. [2018-03-28 13:08:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2018-03-28 13:08:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1145 transitions. [2018-03-28 13:08:20,999 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1145 transitions. Word has length 942 [2018-03-28 13:08:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:21,000 INFO L459 AbstractCegarLoop]: Abstraction has 1134 states and 1145 transitions. [2018-03-28 13:08:21,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-03-28 13:08:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1145 transitions. [2018-03-28 13:08:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1062 [2018-03-28 13:08:21,010 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:21,011 INFO L355 BasicCegarLoop]: trace histogram [103, 92, 91, 91, 91, 91, 91, 91, 91, 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] [2018-03-28 13:08:21,011 INFO L408 AbstractCegarLoop]: === Iteration 39 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:21,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1113498289, now seen corresponding path program 21 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 [2018-03-28 13:08:21,017 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:21,193 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 40351 backedges. 18354 proven. 517 refuted. 0 times theorem prover too weak. 21480 trivial. 0 not checked. [2018-03-28 13:08:22,383 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 40351 backedges. 18354 proven. 517 refuted. 0 times theorem prover too weak. 21480 trivial. 0 not checked. [2018-03-28 13:08:23,593 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:23,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 72 [2018-03-28 13:08:23,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-03-28 13:08:23,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-03-28 13:08:23,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=4414, Unknown=0, NotChecked=0, Total=5112 [2018-03-28 13:08:23,594 INFO L87 Difference]: Start difference. First operand 1134 states and 1145 transitions. Second operand 72 states. [2018-03-28 13:08:24,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:24,950 INFO L93 Difference]: Finished difference Result 1367 states and 1390 transitions. [2018-03-28 13:08:24,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-03-28 13:08:24,950 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 1061 [2018-03-28 13:08:24,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:24,953 INFO L225 Difference]: With dead ends: 1367 [2018-03-28 13:08:24,953 INFO L226 Difference]: Without dead ends: 1144 [2018-03-28 13:08:24,955 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2175 GetRequests, 2029 SyntacticMatches, 23 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5918 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2456, Invalid=13044, Unknown=0, NotChecked=0, Total=15500 [2018-03-28 13:08:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2018-03-28 13:08:24,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1134. [2018-03-28 13:08:24,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2018-03-28 13:08:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1143 transitions. [2018-03-28 13:08:24,976 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1143 transitions. Word has length 1061 [2018-03-28 13:08:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:24,977 INFO L459 AbstractCegarLoop]: Abstraction has 1134 states and 1143 transitions. [2018-03-28 13:08:24,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-03-28 13:08:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1143 transitions. [2018-03-28 13:08:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-03-28 13:08:24,983 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:24,984 INFO L355 BasicCegarLoop]: trace histogram [104, 93, 92, 92, 92, 92, 92, 92, 92, 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] [2018-03-28 13:08:24,984 INFO L408 AbstractCegarLoop]: === Iteration 40 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:24,984 INFO L82 PathProgramCache]: Analyzing trace with hash -919565584, now seen corresponding path program 22 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 [2018-03-28 13:08:24,992 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:25,193 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 41195 backedges. 12012 proven. 594 refuted. 0 times theorem prover too weak. 28589 trivial. 0 not checked. [2018-03-28 13:08:26,310 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:27,991 INFO L134 CoverageAnalysis]: Checked inductivity of 41195 backedges. 12012 proven. 594 refuted. 0 times theorem prover too weak. 28589 trivial. 0 not checked. [2018-03-28 13:08:28,016 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:28,017 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 81 [2018-03-28 13:08:28,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-03-28 13:08:28,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-03-28 13:08:28,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=841, Invalid=5639, Unknown=0, NotChecked=0, Total=6480 [2018-03-28 13:08:28,019 INFO L87 Difference]: Start difference. First operand 1134 states and 1143 transitions. Second operand 81 states. [2018-03-28 13:08:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:30,889 INFO L93 Difference]: Finished difference Result 1479 states and 1498 transitions. [2018-03-28 13:08:30,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-03-28 13:08:30,890 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 1070 [2018-03-28 13:08:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:30,893 INFO L225 Difference]: With dead ends: 1479 [2018-03-28 13:08:30,893 INFO L226 Difference]: Without dead ends: 1272 [2018-03-28 13:08:30,894 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2213 GetRequests, 2035 SyntacticMatches, 25 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6314 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3632, Invalid=20238, Unknown=0, NotChecked=0, Total=23870 [2018-03-28 13:08:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2018-03-28 13:08:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1261. [2018-03-28 13:08:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2018-03-28 13:08:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1270 transitions. [2018-03-28 13:08:30,917 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1270 transitions. Word has length 1070 [2018-03-28 13:08:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:30,917 INFO L459 AbstractCegarLoop]: Abstraction has 1261 states and 1270 transitions. [2018-03-28 13:08:30,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-03-28 13:08:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1270 transitions. [2018-03-28 13:08:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1199 [2018-03-28 13:08:30,925 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:30,925 INFO L355 BasicCegarLoop]: trace histogram [117, 105, 104, 104, 104, 104, 104, 104, 104, 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] [2018-03-28 13:08:30,925 INFO L408 AbstractCegarLoop]: === Iteration 41 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:30,926 INFO L82 PathProgramCache]: Analyzing trace with hash 200201181, now seen corresponding path program 23 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 [2018-03-28 13:08:30,931 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:31,131 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 52464 backedges. 22256 proven. 618 refuted. 0 times theorem prover too weak. 29590 trivial. 0 not checked. [2018-03-28 13:08:32,361 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 52464 backedges. 22256 proven. 618 refuted. 0 times theorem prover too weak. 29590 trivial. 0 not checked. [2018-03-28 13:08:33,874 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:33,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 78 [2018-03-28 13:08:33,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-03-28 13:08:33,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-03-28 13:08:33,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=5198, Unknown=0, NotChecked=0, Total=6006 [2018-03-28 13:08:33,876 INFO L87 Difference]: Start difference. First operand 1261 states and 1270 transitions. Second operand 78 states. [2018-03-28 13:08:35,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:35,158 INFO L93 Difference]: Finished difference Result 1484 states and 1502 transitions. [2018-03-28 13:08:35,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-03-28 13:08:35,158 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 1198 [2018-03-28 13:08:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:35,161 INFO L225 Difference]: With dead ends: 1484 [2018-03-28 13:08:35,161 INFO L226 Difference]: Without dead ends: 1271 [2018-03-28 13:08:35,163 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2454 GetRequests, 2295 SyntacticMatches, 25 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7074 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2882, Invalid=15478, Unknown=0, NotChecked=0, Total=18360 [2018-03-28 13:08:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2018-03-28 13:08:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1261. [2018-03-28 13:08:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2018-03-28 13:08:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1268 transitions. [2018-03-28 13:08:35,186 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1268 transitions. Word has length 1198 [2018-03-28 13:08:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:35,187 INFO L459 AbstractCegarLoop]: Abstraction has 1261 states and 1268 transitions. [2018-03-28 13:08:35,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-03-28 13:08:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1268 transitions. [2018-03-28 13:08:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2018-03-28 13:08:35,194 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:35,195 INFO L355 BasicCegarLoop]: trace histogram [118, 106, 105, 105, 105, 105, 105, 105, 105, 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] [2018-03-28 13:08:35,195 INFO L408 AbstractCegarLoop]: === Iteration 42 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:35,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1671130078, now seen corresponding path program 24 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 [2018-03-28 13:08:35,201 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:35,397 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 53427 backedges. 13853 proven. 708 refuted. 0 times theorem prover too weak. 38866 trivial. 0 not checked. [2018-03-28 13:08:37,231 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 53427 backedges. 13853 proven. 708 refuted. 0 times theorem prover too weak. 38866 trivial. 0 not checked. [2018-03-28 13:08:39,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:39,712 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 87 [2018-03-28 13:08:39,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-03-28 13:08:39,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-03-28 13:08:39,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=6521, Unknown=0, NotChecked=0, Total=7482 [2018-03-28 13:08:39,713 INFO L87 Difference]: Start difference. First operand 1261 states and 1268 transitions. Second operand 87 states. [2018-03-28 13:08:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:42,904 INFO L93 Difference]: Finished difference Result 1605 states and 1620 transitions. [2018-03-28 13:08:42,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-03-28 13:08:42,905 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 1207 [2018-03-28 13:08:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:42,908 INFO L225 Difference]: With dead ends: 1605 [2018-03-28 13:08:42,908 INFO L226 Difference]: Without dead ends: 1408 [2018-03-28 13:08:42,910 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2493 GetRequests, 2301 SyntacticMatches, 27 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7394 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4177, Invalid=23545, Unknown=0, NotChecked=0, Total=27722 [2018-03-28 13:08:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2018-03-28 13:08:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1397. [2018-03-28 13:08:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-03-28 13:08:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1404 transitions. [2018-03-28 13:08:42,935 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1404 transitions. Word has length 1207 [2018-03-28 13:08:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:42,936 INFO L459 AbstractCegarLoop]: Abstraction has 1397 states and 1404 transitions. [2018-03-28 13:08:42,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-03-28 13:08:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1404 transitions. [2018-03-28 13:08:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1345 [2018-03-28 13:08:42,945 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:42,945 INFO L355 BasicCegarLoop]: trace histogram [132, 119, 118, 118, 118, 118, 118, 118, 118, 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] [2018-03-28 13:08:42,945 INFO L408 AbstractCegarLoop]: === Iteration 43 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:42,945 INFO L82 PathProgramCache]: Analyzing trace with hash 293856048, now seen corresponding path program 25 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 [2018-03-28 13:08:42,953 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:43,228 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 67252 backedges. 26645 proven. 728 refuted. 0 times theorem prover too weak. 39879 trivial. 0 not checked. [2018-03-28 13:08:44,666 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 67252 backedges. 26645 proven. 728 refuted. 0 times theorem prover too weak. 39879 trivial. 0 not checked. [2018-03-28 13:08:46,493 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:46,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 84 [2018-03-28 13:08:46,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-03-28 13:08:46,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-03-28 13:08:46,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=926, Invalid=6046, Unknown=0, NotChecked=0, Total=6972 [2018-03-28 13:08:46,495 INFO L87 Difference]: Start difference. First operand 1397 states and 1404 transitions. Second operand 84 states. [2018-03-28 13:08:47,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:47,913 INFO L93 Difference]: Finished difference Result 1610 states and 1623 transitions. [2018-03-28 13:08:47,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-03-28 13:08:47,913 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 1344 [2018-03-28 13:08:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:47,918 INFO L225 Difference]: With dead ends: 1610 [2018-03-28 13:08:47,918 INFO L226 Difference]: Without dead ends: 1407 [2018-03-28 13:08:47,921 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2751 GetRequests, 2579 SyntacticMatches, 27 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8333 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3342, Invalid=18120, Unknown=0, NotChecked=0, Total=21462 [2018-03-28 13:08:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2018-03-28 13:08:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1397. [2018-03-28 13:08:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-03-28 13:08:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1402 transitions. [2018-03-28 13:08:47,949 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1402 transitions. Word has length 1344 [2018-03-28 13:08:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:47,950 INFO L459 AbstractCegarLoop]: Abstraction has 1397 states and 1402 transitions. [2018-03-28 13:08:47,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-03-28 13:08:47,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1402 transitions. [2018-03-28 13:08:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1354 [2018-03-28 13:08:47,959 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:47,960 INFO L355 BasicCegarLoop]: trace histogram [133, 120, 119, 119, 119, 119, 119, 119, 119, 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] [2018-03-28 13:08:47,960 INFO L408 AbstractCegarLoop]: === Iteration 44 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:47,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1881140689, now seen corresponding path program 26 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 [2018-03-28 13:08:47,966 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:48,191 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 68343 backedges. 15823 proven. 832 refuted. 0 times theorem prover too weak. 51688 trivial. 0 not checked. [2018-03-28 13:08:49,711 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 68343 backedges. 15823 proven. 832 refuted. 0 times theorem prover too weak. 51688 trivial. 0 not checked. [2018-03-28 13:08:51,631 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:51,632 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 93 [2018-03-28 13:08:51,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-03-28 13:08:51,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-03-28 13:08:51,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=7467, Unknown=0, NotChecked=0, Total=8556 [2018-03-28 13:08:51,634 INFO L87 Difference]: Start difference. First operand 1397 states and 1402 transitions. Second operand 93 states. [2018-03-28 13:08:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:08:54,859 INFO L93 Difference]: Finished difference Result 1740 states and 1751 transitions. [2018-03-28 13:08:54,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-03-28 13:08:54,859 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 1353 [2018-03-28 13:08:54,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:08:54,863 INFO L225 Difference]: With dead ends: 1740 [2018-03-28 13:08:54,863 INFO L226 Difference]: Without dead ends: 1553 [2018-03-28 13:08:54,866 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2791 GetRequests, 2585 SyntacticMatches, 29 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8559 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4760, Invalid=27102, Unknown=0, NotChecked=0, Total=31862 [2018-03-28 13:08:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2018-03-28 13:08:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1542. [2018-03-28 13:08:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2018-03-28 13:08:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 1547 transitions. [2018-03-28 13:08:54,907 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 1547 transitions. Word has length 1353 [2018-03-28 13:08:54,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:08:54,908 INFO L459 AbstractCegarLoop]: Abstraction has 1542 states and 1547 transitions. [2018-03-28 13:08:54,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-03-28 13:08:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 1547 transitions. [2018-03-28 13:08:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1500 [2018-03-28 13:08:54,925 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:08:54,926 INFO L355 BasicCegarLoop]: trace histogram [148, 134, 133, 133, 133, 133, 133, 133, 133, 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] [2018-03-28 13:08:54,926 INFO L408 AbstractCegarLoop]: === Iteration 45 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:08:54,927 INFO L82 PathProgramCache]: Analyzing trace with hash -2063255812, now seen corresponding path program 27 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 [2018-03-28 13:08:54,933 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:08:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:08:55,191 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:08:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 85099 backedges. 31548 proven. 847 refuted. 0 times theorem prover too weak. 52704 trivial. 0 not checked. [2018-03-28 13:08:56,848 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:08:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 85099 backedges. 31548 proven. 847 refuted. 0 times theorem prover too weak. 52704 trivial. 0 not checked. [2018-03-28 13:08:59,047 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:08:59,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 90 [2018-03-28 13:08:59,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-03-28 13:08:59,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-03-28 13:08:59,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1052, Invalid=6958, Unknown=0, NotChecked=0, Total=8010 [2018-03-28 13:08:59,049 INFO L87 Difference]: Start difference. First operand 1542 states and 1547 transitions. Second operand 90 states. [2018-03-28 13:09:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:09:00,816 INFO L93 Difference]: Finished difference Result 1749 states and 1757 transitions. [2018-03-28 13:09:00,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-03-28 13:09:00,816 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 1499 [2018-03-28 13:09:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:09:00,821 INFO L225 Difference]: With dead ends: 1749 [2018-03-28 13:09:00,822 INFO L226 Difference]: Without dead ends: 1556 [2018-03-28 13:09:00,839 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3066 GetRequests, 2881 SyntacticMatches, 29 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9695 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3836, Invalid=20970, Unknown=0, NotChecked=0, Total=24806 [2018-03-28 13:09:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-03-28 13:09:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1542. [2018-03-28 13:09:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2018-03-28 13:09:00,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 1545 transitions. [2018-03-28 13:09:00,865 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 1545 transitions. Word has length 1499 [2018-03-28 13:09:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:09:00,865 INFO L459 AbstractCegarLoop]: Abstraction has 1542 states and 1545 transitions. [2018-03-28 13:09:00,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-03-28 13:09:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 1545 transitions. [2018-03-28 13:09:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2018-03-28 13:09:00,876 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:09:00,876 INFO L355 BasicCegarLoop]: trace histogram [149, 135, 134, 134, 134, 134, 134, 134, 134, 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] [2018-03-28 13:09:00,877 INFO L408 AbstractCegarLoop]: === Iteration 46 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:09:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash -139312157, now seen corresponding path program 28 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 [2018-03-28 13:09:00,882 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:09:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:09:01,129 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:09:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 86327 backedges. 16870 proven. 990 refuted. 0 times theorem prover too weak. 68467 trivial. 0 not checked. [2018-03-28 13:09:02,103 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:09:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 86327 backedges. 16870 proven. 990 refuted. 0 times theorem prover too weak. 68467 trivial. 0 not checked. [2018-03-28 13:09:03,940 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:09:03,941 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-03-28 13:09:03,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-03-28 13:09:03,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-03-28 13:09:03,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-03-28 13:09:03,942 INFO L87 Difference]: Start difference. First operand 1542 states and 1545 transitions. Second operand 64 states. [2018-03-28 13:09:06,168 WARN L151 SmtUtils]: Spent 253ms on a formula simplification. DAG size of input: 119 DAG size of output 11 [2018-03-28 13:09:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:09:10,323 INFO L93 Difference]: Finished difference Result 1755 states and 1789 transitions. [2018-03-28 13:09:10,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-03-28 13:09:10,323 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 1508 [2018-03-28 13:09:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:09:10,328 INFO L225 Difference]: With dead ends: 1755 [2018-03-28 13:09:10,328 INFO L226 Difference]: Without dead ends: 1754 [2018-03-28 13:09:10,329 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3103 GetRequests, 2967 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-03-28 13:09:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2018-03-28 13:09:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1685. [2018-03-28 13:09:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1685 states. [2018-03-28 13:09:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 1719 transitions. [2018-03-28 13:09:10,360 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 1719 transitions. Word has length 1508 [2018-03-28 13:09:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:09:10,361 INFO L459 AbstractCegarLoop]: Abstraction has 1685 states and 1719 transitions. [2018-03-28 13:09:10,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-03-28 13:09:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 1719 transitions. [2018-03-28 13:09:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1510 [2018-03-28 13:09:10,373 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:09:10,374 INFO L355 BasicCegarLoop]: trace histogram [149, 135, 135, 134, 134, 134, 134, 134, 134, 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] [2018-03-28 13:09:10,374 INFO L408 AbstractCegarLoop]: === Iteration 47 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:09:10,374 INFO L82 PathProgramCache]: Analyzing trace with hash -23709519, now seen corresponding path program 3 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 [2018-03-28 13:09:10,383 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:09:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:09:10,663 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 13:09:10,666 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 [2018-03-28 13:09:10,667 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-28 13:09:10,669 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-28 13:09:10,670 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-28 13:09:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 86461 backedges. 17059 proven. 1005 refuted. 0 times theorem prover too weak. 68397 trivial. 0 not checked. [2018-03-28 13:09:14,430 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 13:09:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 86461 backedges. 17059 proven. 1005 refuted. 0 times theorem prover too weak. 68397 trivial. 0 not checked. [2018-03-28 13:09:16,841 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 13:09:16,842 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 70 [2018-03-28 13:09:16,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-03-28 13:09:16,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-03-28 13:09:16,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=719, Invalid=4251, Unknown=0, NotChecked=0, Total=4970 [2018-03-28 13:09:16,844 INFO L87 Difference]: Start difference. First operand 1685 states and 1719 transitions. Second operand 71 states. [2018-03-28 13:09:20,471 WARN L151 SmtUtils]: Spent 101ms on a formula simplification. DAG size of input: 124 DAG size of output 27 [2018-03-28 13:09:21,420 WARN L151 SmtUtils]: Spent 109ms on a formula simplification. DAG size of input: 113 DAG size of output 26 [2018-03-28 13:09:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 13:09:26,803 INFO L93 Difference]: Finished difference Result 1735 states and 1769 transitions. [2018-03-28 13:09:26,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-03-28 13:09:26,804 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 1509 [2018-03-28 13:09:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 13:09:26,808 INFO L225 Difference]: With dead ends: 1735 [2018-03-28 13:09:26,808 INFO L226 Difference]: Without dead ends: 1734 [2018-03-28 13:09:26,809 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3110 GetRequests, 2922 SyntacticMatches, 27 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5948 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=5718, Invalid=20688, Unknown=0, NotChecked=0, Total=26406 [2018-03-28 13:09:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2018-03-28 13:09:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1686. [2018-03-28 13:09:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2018-03-28 13:09:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 1705 transitions. [2018-03-28 13:09:26,838 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 1705 transitions. Word has length 1509 [2018-03-28 13:09:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 13:09:26,838 INFO L459 AbstractCegarLoop]: Abstraction has 1686 states and 1705 transitions. [2018-03-28 13:09:26,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-03-28 13:09:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 1705 transitions. [2018-03-28 13:09:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1528 [2018-03-28 13:09:26,849 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 13:09:26,850 INFO L355 BasicCegarLoop]: trace histogram [149, 134, 134, 134, 134, 134, 134, 134, 134, 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] [2018-03-28 13:09:26,850 INFO L408 AbstractCegarLoop]: === Iteration 48 === [__U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_read_c__fooErr1RequiresViolation, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 13:09:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash -755923561, now seen corresponding path program 7 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 [2018-03-28 13:09:26,856 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 13:09:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 13:09:27,113 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-03-28 13:09:27,594 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-03-28 13:09:27,595 WARN L519 AbstractCegarLoop]: Verification canceled [2018-03-28 13:09:27,599 WARN L197 ceAbstractionStarter]: Timeout [2018-03-28 13:09:27,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 01:09:27 BoogieIcfgContainer [2018-03-28 13:09:27,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-03-28 13:09:27,600 INFO L168 Benchmark]: Toolchain (without parser) took 128502.08 ms. Allocated memory was 302.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 245.9 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 310.7 MB. Max. memory is 5.3 GB. [2018-03-28 13:09:27,601 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.5 MB. Free memory is still 264.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-03-28 13:09:27,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.41 ms. Allocated memory is still 302.5 MB. Free memory was 244.9 MB in the beginning and 235.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-03-28 13:09:27,602 INFO L168 Benchmark]: Boogie Preprocessor took 42.06 ms. Allocated memory is still 302.5 MB. Free memory was 235.9 MB in the beginning and 233.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-03-28 13:09:27,602 INFO L168 Benchmark]: RCFGBuilder took 434.76 ms. Allocated memory was 302.5 MB in the beginning and 462.9 MB in the end (delta: 160.4 MB). Free memory was 233.9 MB in the beginning and 429.8 MB in the end (delta: -195.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. [2018-03-28 13:09:27,603 INFO L168 Benchmark]: TraceAbstraction took 127745.69 ms. Allocated memory was 462.9 MB in the beginning and 2.3 GB in the end (delta: 1.8 GB). Free memory was 428.5 MB in the beginning and 1.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 332.9 MB. Max. memory is 5.3 GB. [2018-03-28 13:09:27,605 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.5 MB. Free memory is still 264.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 273.41 ms. Allocated memory is still 302.5 MB. Free memory was 244.9 MB in the beginning and 235.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 42.06 ms. Allocated memory is still 302.5 MB. Free memory was 235.9 MB in the beginning and 233.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 434.76 ms. Allocated memory was 302.5 MB in the beginning and 462.9 MB in the end (delta: 160.4 MB). Free memory was 233.9 MB in the beginning and 429.8 MB in the end (delta: -195.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 127745.69 ms. Allocated memory was 462.9 MB in the beginning and 2.3 GB in the end (delta: 1.8 GB). Free memory was 428.5 MB in the beginning and 1.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 332.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 1528 with TraceHistMax 149, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 45 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 1528 with TraceHistMax 149, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 45 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 1528 with TraceHistMax 149, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - 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 1528 with TraceHistMax 149, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 45 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 1528 with TraceHistMax 149, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 45 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 1528 with TraceHistMax 149, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 61 locations, 6 error locations. TIMEOUT Result, 127.6s OverallTime, 48 OverallIterations, 149 TraceHistogramMax, 58.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3479 SDtfs, 12845 SDslu, 40299 SDs, 0 SdLazy, 39651 SolverSat, 2906 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47843 GetRequests, 44062 SyntacticMatches, 498 SemanticMatches, 3283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107108 ImplicationChecksByTransitivity, 71.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1686occurred in iteration=47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 47 MinimizatonAttempts, 664 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 61.1s InterpolantComputationTime, 23168 NumberOfCodeBlocks, 23168 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 46242 ConstructedInterpolants, 1579 QuantifiedInterpolants, 95927942 SizeOfPredicates, 1058 NumberOfNonLiveVariables, 42462 ConjunctsInSsa, 1308 ConjunctsInUnsatCore, 94 InterpolantComputations, 15 PerfectInterpolantSequences, 1556946/1579108 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_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-03-28_13-09-27-614.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-03-28_13-09-27-614.csv Completed graceful shutdown