java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-453dfda-m [2018-04-09 22:07:01,457 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-09 22:07:01,458 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-09 22:07:01,472 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-09 22:07:01,472 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-09 22:07:01,473 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-09 22:07:01,474 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-09 22:07:01,476 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-09 22:07:01,478 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-09 22:07:01,479 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-09 22:07:01,480 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-09 22:07:01,481 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-09 22:07:01,481 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-09 22:07:01,483 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-09 22:07:01,484 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-09 22:07:01,486 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-09 22:07:01,488 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-09 22:07:01,490 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-09 22:07:01,492 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-09 22:07:01,493 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-09 22:07:01,496 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-09 22:07:01,496 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-09 22:07:01,496 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-09 22:07:01,497 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-09 22:07:01,498 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-09 22:07:01,500 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-09 22:07:01,500 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-09 22:07:01,501 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-09 22:07:01,502 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-09 22:07:01,502 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-09 22:07:01,502 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-09 22:07:01,503 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-09 22:07:01,528 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-09 22:07:01,528 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-09 22:07:01,528 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-09 22:07:01,528 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-09 22:07:01,529 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-09 22:07:01,529 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-09 22:07:01,529 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-09 22:07:01,530 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-09 22:07:01,530 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-09 22:07:01,530 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-09 22:07:01,530 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-09 22:07:01,530 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-09 22:07:01,531 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-09 22:07:01,531 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-09 22:07:01,531 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-09 22:07:01,531 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-09 22:07:01,531 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-09 22:07:01,531 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-09 22:07:01,532 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-09 22:07:01,532 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-09 22:07:01,532 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-09 22:07:01,532 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-09 22:07:01,532 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-09 22:07:01,532 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-09 22:07:01,533 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-09 22:07:01,533 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-09 22:07:01,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-09 22:07:01,533 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-09 22:07:01,533 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-09 22:07:01,534 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-09 22:07:01,534 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-09 22:07:01,534 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-09 22:07:01,534 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:01,534 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-09 22:07:01,535 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-09 22:07:01,535 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-09 22:07:01,535 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-09 22:07:01,536 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-09 22:07:01,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-09 22:07:01,579 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-09 22:07:01,583 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-09 22:07:01,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-09 22:07:01,585 INFO L276 PluginConnector]: CDTParser initialized [2018-04-09 22:07:01,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-09 22:07:01,902 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5dc1682e6 [2018-04-09 22:07:02,026 INFO L287 CDTParser]: IsIndexed: true [2018-04-09 22:07:02,026 INFO L288 CDTParser]: Found 1 translation units. [2018-04-09 22:07:02,027 INFO L168 CDTParser]: Scanning ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-09 22:07:02,028 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-09 22:07:02,028 INFO L215 ultiparseSymbolTable]: [2018-04-09 22:07:02,028 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-09 22:07:02,028 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-09 22:07:02,028 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo ('foo') in ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-09 22:07:02,028 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-09 22:07:02,029 INFO L233 ultiparseSymbolTable]: [2018-04-09 22:07:02,043 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5dc1682e6 [2018-04-09 22:07:02,048 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-09 22:07:02,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-09 22:07:02,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-09 22:07:02,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-09 22:07:02,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-09 22:07:02,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e045437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02, skipping insertion in model container [2018-04-09 22:07:02,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,075 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-09 22:07:02,088 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-09 22:07:02,241 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-09 22:07:02,268 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-09 22:07:02,274 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-09 22:07:02,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02 WrapperNode [2018-04-09 22:07:02,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-09 22:07:02,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-09 22:07:02,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-09 22:07:02,283 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-09 22:07:02,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (1/1) ... [2018-04-09 22:07:02,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-09 22:07:02,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-09 22:07:02,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-09 22:07:02,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-09 22:07:02,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-09 22:07:02,369 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-09 22:07:02,369 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-09 22:07:02,370 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-04-09 22:07:02,370 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-09 22:07:02,370 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-04-09 22:07:02,370 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-09 22:07:02,370 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-09 22:07:02,370 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-09 22:07:02,370 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-09 22:07:02,371 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-09 22:07:02,371 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-09 22:07:02,371 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-09 22:07:02,371 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-09 22:07:02,646 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-09 22:07:02,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.04 10:07:02 BoogieIcfgContainer [2018-04-09 22:07:02,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-09 22:07:02,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-09 22:07:02,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-09 22:07:02,649 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-09 22:07:02,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.04 10:07:02" (1/3) ... [2018-04-09 22:07:02,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82cc0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.04 10:07:02, skipping insertion in model container [2018-04-09 22:07:02,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:07:02" (2/3) ... [2018-04-09 22:07:02,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82cc0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.04 10:07:02, skipping insertion in model container [2018-04-09 22:07:02,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.04 10:07:02" (3/3) ... [2018-04-09 22:07:02,653 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-09 22:07:02,660 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-09 22:07:02,669 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-04-09 22:07:02,713 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-09 22:07:02,714 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-09 22:07:02,714 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-09 22:07:02,714 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-09 22:07:02,715 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-09 22:07:02,715 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-09 22:07:02,715 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-09 22:07:02,715 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-09 22:07:02,715 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-09 22:07:02,716 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-09 22:07:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-04-09 22:07:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-04-09 22:07:02,733 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:02,733 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:02,733 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1751798805, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:02,749 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:02,790 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:02,838 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:02,904 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:07:02,904 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-04-09 22:07:02,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-09 22:07:02,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-09 22:07:02,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-04-09 22:07:02,924 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 5 states. [2018-04-09 22:07:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:03,033 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2018-04-09 22:07:03,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-09 22:07:03,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-04-09 22:07:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:03,044 INFO L225 Difference]: With dead ends: 141 [2018-04-09 22:07:03,044 INFO L226 Difference]: Without dead ends: 84 [2018-04-09 22:07:03,048 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-04-09 22:07:03,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-04-09 22:07:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2018-04-09 22:07:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-04-09 22:07:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2018-04-09 22:07:03,098 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 16 [2018-04-09 22:07:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:03,098 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2018-04-09 22:07:03,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-09 22:07:03,099 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2018-04-09 22:07:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-09 22:07:03,100 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:03,100 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:03,100 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:03,100 INFO L82 PathProgramCache]: Analyzing trace with hash -177512800, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:03,109 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:03,128 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:03,164 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:03,224 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:07:03,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-09 22:07:03,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-09 22:07:03,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-09 22:07:03,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-09 22:07:03,227 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 4 states. [2018-04-09 22:07:03,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:03,259 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2018-04-09 22:07:03,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-09 22:07:03,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-04-09 22:07:03,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:03,263 INFO L225 Difference]: With dead ends: 82 [2018-04-09 22:07:03,263 INFO L226 Difference]: Without dead ends: 81 [2018-04-09 22:07:03,264 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-09 22:07:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-04-09 22:07:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2018-04-09 22:07:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-04-09 22:07:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-04-09 22:07:03,273 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 25 [2018-04-09 22:07:03,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:03,274 INFO L459 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-04-09 22:07:03,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-09 22:07:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-04-09 22:07:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-04-09 22:07:03,274 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:03,275 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:03,275 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:03,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1207929453, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:03,290 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:03,308 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:03,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-09 22:07:03,333 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:07:03,340 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:07:03,341 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-09 22:07:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:03,363 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:03,418 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:07:03,419 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-04-09 22:07:03,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-09 22:07:03,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-09 22:07:03,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-09 22:07:03,420 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 6 states. [2018-04-09 22:07:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:03,560 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-04-09 22:07:03,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-09 22:07:03,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-04-09 22:07:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:03,562 INFO L225 Difference]: With dead ends: 71 [2018-04-09 22:07:03,562 INFO L226 Difference]: Without dead ends: 70 [2018-04-09 22:07:03,563 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-04-09 22:07:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-04-09 22:07:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-04-09 22:07:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-04-09 22:07:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2018-04-09 22:07:03,572 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 26 [2018-04-09 22:07:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:03,573 INFO L459 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2018-04-09 22:07:03,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-09 22:07:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2018-04-09 22:07:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-04-09 22:07:03,574 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:03,574 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:03,574 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1207929452, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:03,582 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:03,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:03,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-09 22:07:03,605 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:07:03,610 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:07:03,610 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:07:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:03,664 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:03,803 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:07:03,804 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2018-04-09 22:07:03,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-09 22:07:03,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-09 22:07:03,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-04-09 22:07:03,805 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 12 states. [2018-04-09 22:07:04,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:04,041 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-04-09 22:07:04,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-09 22:07:04,041 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2018-04-09 22:07:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:04,042 INFO L225 Difference]: With dead ends: 79 [2018-04-09 22:07:04,042 INFO L226 Difference]: Without dead ends: 78 [2018-04-09 22:07:04,043 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-04-09 22:07:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-04-09 22:07:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2018-04-09 22:07:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-04-09 22:07:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-04-09 22:07:04,051 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 26 [2018-04-09 22:07:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:04,052 INFO L459 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-04-09 22:07:04,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-09 22:07:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-04-09 22:07:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-09 22:07:04,053 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:04,053 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:04,054 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:04,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1743777157, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:04,066 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:04,082 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:04,103 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:04,195 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:04,195 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-09 22:07:04,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-09 22:07:04,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-09 22:07:04,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-09 22:07:04,196 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 8 states. [2018-04-09 22:07:04,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:04,360 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2018-04-09 22:07:04,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-09 22:07:04,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-04-09 22:07:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:04,362 INFO L225 Difference]: With dead ends: 105 [2018-04-09 22:07:04,362 INFO L226 Difference]: Without dead ends: 104 [2018-04-09 22:07:04,363 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-04-09 22:07:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-04-09 22:07:04,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2018-04-09 22:07:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-09 22:07:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2018-04-09 22:07:04,370 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 34 [2018-04-09 22:07:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:04,371 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2018-04-09 22:07:04,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-09 22:07:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2018-04-09 22:07:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-04-09 22:07:04,371 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:04,371 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:04,372 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:04,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1777482929, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:04,377 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:04,393 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:04,405 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-09 22:07:04,405 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:07:04,426 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:07:04,426 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:07:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:04,477 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:04,587 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:04,587 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-09 22:07:04,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-09 22:07:04,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-09 22:07:04,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-04-09 22:07:04,588 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 16 states. [2018-04-09 22:07:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:04,868 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2018-04-09 22:07:04,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-09 22:07:04,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2018-04-09 22:07:04,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:04,870 INFO L225 Difference]: With dead ends: 99 [2018-04-09 22:07:04,870 INFO L226 Difference]: Without dead ends: 98 [2018-04-09 22:07:04,871 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2018-04-09 22:07:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-04-09 22:07:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2018-04-09 22:07:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-09 22:07:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2018-04-09 22:07:04,881 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 35 [2018-04-09 22:07:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:04,882 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2018-04-09 22:07:04,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-09 22:07:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2018-04-09 22:07:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-04-09 22:07:04,883 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:04,884 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:04,884 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:04,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1833243520, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:04,891 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:04,906 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:04,924 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:04,995 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:07:04,995 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-09 22:07:04,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-09 22:07:04,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-09 22:07:04,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-09 22:07:04,996 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 8 states. [2018-04-09 22:07:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:05,055 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2018-04-09 22:07:05,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-09 22:07:05,056 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-04-09 22:07:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:05,057 INFO L225 Difference]: With dead ends: 165 [2018-04-09 22:07:05,057 INFO L226 Difference]: Without dead ends: 89 [2018-04-09 22:07:05,057 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2018-04-09 22:07:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-09 22:07:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-04-09 22:07:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-09 22:07:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2018-04-09 22:07:05,065 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 37 [2018-04-09 22:07:05,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:05,066 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2018-04-09 22:07:05,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-09 22:07:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2018-04-09 22:07:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-09 22:07:05,068 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:05,068 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:05,068 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1745832933, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:05,075 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:05,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:05,153 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:05,226 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:05,226 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-04-09 22:07:05,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-09 22:07:05,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-09 22:07:05,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-04-09 22:07:05,227 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 12 states. [2018-04-09 22:07:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:05,328 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2018-04-09 22:07:05,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-09 22:07:05,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2018-04-09 22:07:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:05,330 INFO L225 Difference]: With dead ends: 168 [2018-04-09 22:07:05,330 INFO L226 Difference]: Without dead ends: 89 [2018-04-09 22:07:05,331 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2018-04-09 22:07:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-09 22:07:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-04-09 22:07:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-09 22:07:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2018-04-09 22:07:05,337 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 46 [2018-04-09 22:07:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:05,337 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2018-04-09 22:07:05,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-09 22:07:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2018-04-09 22:07:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-04-09 22:07:05,339 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:05,339 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:05,339 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1585197083, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:05,347 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:05,362 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:05,392 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:05,498 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:05,498 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-09 22:07:05,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-09 22:07:05,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-09 22:07:05,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-09 22:07:05,499 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand 16 states. [2018-04-09 22:07:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:05,902 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2018-04-09 22:07:05,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-09 22:07:05,902 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2018-04-09 22:07:05,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:05,903 INFO L225 Difference]: With dead ends: 146 [2018-04-09 22:07:05,903 INFO L226 Difference]: Without dead ends: 145 [2018-04-09 22:07:05,904 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-04-09 22:07:05,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-04-09 22:07:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 124. [2018-04-09 22:07:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-04-09 22:07:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2018-04-09 22:07:05,912 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 52 [2018-04-09 22:07:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:05,913 INFO L459 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2018-04-09 22:07:05,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-09 22:07:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2018-04-09 22:07:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-04-09 22:07:05,914 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:05,914 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:05,914 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1896469265, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:05,920 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:05,936 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:05,939 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-09 22:07:05,939 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:07:05,941 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:07:05,941 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:07:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:06,059 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:06,234 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:06,234 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-04-09 22:07:06,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-09 22:07:06,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-09 22:07:06,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2018-04-09 22:07:06,235 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 24 states. [2018-04-09 22:07:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:07,015 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2018-04-09 22:07:07,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-09 22:07:07,016 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2018-04-09 22:07:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:07,017 INFO L225 Difference]: With dead ends: 138 [2018-04-09 22:07:07,017 INFO L226 Difference]: Without dead ends: 137 [2018-04-09 22:07:07,018 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=441, Invalid=1539, Unknown=0, NotChecked=0, Total=1980 [2018-04-09 22:07:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-04-09 22:07:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2018-04-09 22:07:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-04-09 22:07:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2018-04-09 22:07:07,027 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 53 [2018-04-09 22:07:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:07,028 INFO L459 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2018-04-09 22:07:07,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-09 22:07:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2018-04-09 22:07:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-04-09 22:07:07,029 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:07,029 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:07,029 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash -100491707, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:07,036 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:07,055 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:07,125 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:07,256 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:07,257 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-04-09 22:07:07,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-09 22:07:07,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-09 22:07:07,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-04-09 22:07:07,258 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand 20 states. [2018-04-09 22:07:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:07,596 INFO L93 Difference]: Finished difference Result 240 states and 254 transitions. [2018-04-09 22:07:07,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-09 22:07:07,596 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2018-04-09 22:07:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:07,597 INFO L225 Difference]: With dead ends: 240 [2018-04-09 22:07:07,597 INFO L226 Difference]: Without dead ends: 125 [2018-04-09 22:07:07,598 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=432, Invalid=900, Unknown=0, NotChecked=0, Total=1332 [2018-04-09 22:07:07,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-04-09 22:07:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-04-09 22:07:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-04-09 22:07:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2018-04-09 22:07:07,603 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 64 [2018-04-09 22:07:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:07,604 INFO L459 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2018-04-09 22:07:07,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-09 22:07:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2018-04-09 22:07:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-04-09 22:07:07,605 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:07,605 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:07,605 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:07,605 INFO L82 PathProgramCache]: Analyzing trace with hash -96334683, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:07,617 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:07,640 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:07,745 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:08,042 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:08,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-09 22:07:08,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-09 22:07:08,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-09 22:07:08,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-09 22:07:08,044 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand 32 states. [2018-04-09 22:07:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:09,220 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2018-04-09 22:07:09,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-09 22:07:09,239 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 88 [2018-04-09 22:07:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:09,241 INFO L225 Difference]: With dead ends: 234 [2018-04-09 22:07:09,241 INFO L226 Difference]: Without dead ends: 233 [2018-04-09 22:07:09,242 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-04-09 22:07:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-04-09 22:07:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 196. [2018-04-09 22:07:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-04-09 22:07:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 214 transitions. [2018-04-09 22:07:09,252 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 214 transitions. Word has length 88 [2018-04-09 22:07:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:09,253 INFO L459 AbstractCegarLoop]: Abstraction has 196 states and 214 transitions. [2018-04-09 22:07:09,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-09 22:07:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 214 transitions. [2018-04-09 22:07:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-04-09 22:07:09,254 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:09,254 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:09,254 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:09,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1308592175, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:09,260 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:09,285 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:09,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-09 22:07:09,290 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:07:09,301 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:07:09,302 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:07:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:09,535 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:09,958 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:09,958 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-04-09 22:07:09,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-09 22:07:09,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-09 22:07:09,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1336, Unknown=0, NotChecked=0, Total=1560 [2018-04-09 22:07:09,960 INFO L87 Difference]: Start difference. First operand 196 states and 214 transitions. Second operand 40 states. [2018-04-09 22:07:12,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:12,277 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2018-04-09 22:07:12,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-04-09 22:07:12,277 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 89 [2018-04-09 22:07:12,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:12,279 INFO L225 Difference]: With dead ends: 222 [2018-04-09 22:07:12,279 INFO L226 Difference]: Without dead ends: 221 [2018-04-09 22:07:12,281 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1521, Invalid=5619, Unknown=0, NotChecked=0, Total=7140 [2018-04-09 22:07:12,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-04-09 22:07:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 197. [2018-04-09 22:07:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-04-09 22:07:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 208 transitions. [2018-04-09 22:07:12,288 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 208 transitions. Word has length 89 [2018-04-09 22:07:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:12,289 INFO L459 AbstractCegarLoop]: Abstraction has 197 states and 208 transitions. [2018-04-09 22:07:12,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-09 22:07:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 208 transitions. [2018-04-09 22:07:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-04-09 22:07:12,289 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:12,290 INFO L355 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:12,290 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1114916091, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:12,298 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:12,330 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:12,620 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:12,994 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:12,994 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2018-04-09 22:07:12,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-09 22:07:12,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-09 22:07:12,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2018-04-09 22:07:12,995 INFO L87 Difference]: Start difference. First operand 197 states and 208 transitions. Second operand 36 states. [2018-04-09 22:07:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:13,830 INFO L93 Difference]: Finished difference Result 384 states and 406 transitions. [2018-04-09 22:07:13,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-09 22:07:13,830 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 100 [2018-04-09 22:07:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:13,832 INFO L225 Difference]: With dead ends: 384 [2018-04-09 22:07:13,832 INFO L226 Difference]: Without dead ends: 197 [2018-04-09 22:07:13,833 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-04-09 22:07:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-04-09 22:07:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-04-09 22:07:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-04-09 22:07:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 200 transitions. [2018-04-09 22:07:13,841 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 200 transitions. Word has length 100 [2018-04-09 22:07:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:13,841 INFO L459 AbstractCegarLoop]: Abstraction has 197 states and 200 transitions. [2018-04-09 22:07:13,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-09 22:07:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 200 transitions. [2018-04-09 22:07:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-04-09 22:07:13,843 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:13,843 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:13,844 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:13,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1027630629, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:13,851 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:13,883 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:14,219 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:15,366 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:15,366 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-09 22:07:15,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-09 22:07:15,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-09 22:07:15,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-09 22:07:15,368 INFO L87 Difference]: Start difference. First operand 197 states and 200 transitions. Second operand 64 states. [2018-04-09 22:07:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:20,818 INFO L93 Difference]: Finished difference Result 410 states and 444 transitions. [2018-04-09 22:07:20,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-09 22:07:20,818 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 160 [2018-04-09 22:07:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:20,821 INFO L225 Difference]: With dead ends: 410 [2018-04-09 22:07:20,821 INFO L226 Difference]: Without dead ends: 409 [2018-04-09 22:07:20,825 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-04-09 22:07:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-04-09 22:07:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 340. [2018-04-09 22:07:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-04-09 22:07:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 374 transitions. [2018-04-09 22:07:20,839 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 374 transitions. Word has length 160 [2018-04-09 22:07:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:20,840 INFO L459 AbstractCegarLoop]: Abstraction has 340 states and 374 transitions. [2018-04-09 22:07:20,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-09 22:07:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 374 transitions. [2018-04-09 22:07:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-04-09 22:07:20,841 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:20,841 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:20,842 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:20,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1791778479, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:20,852 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:20,889 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:20,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-09 22:07:20,896 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:07:20,899 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:07:20,899 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:07:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:21,550 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:22,706 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:22,706 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-04-09 22:07:22,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-04-09 22:07:22,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-04-09 22:07:22,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=4424, Unknown=0, NotChecked=0, Total=5112 [2018-04-09 22:07:22,708 INFO L87 Difference]: Start difference. First operand 340 states and 374 transitions. Second operand 72 states. [2018-04-09 22:07:25,405 WARN L151 SmtUtils]: Spent 105ms on a formula simplification. DAG size of input: 124 DAG size of output 27 [2018-04-09 22:07:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:31,443 INFO L93 Difference]: Finished difference Result 390 states and 424 transitions. [2018-04-09 22:07:31,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-04-09 22:07:31,443 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 161 [2018-04-09 22:07:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:31,446 INFO L225 Difference]: With dead ends: 390 [2018-04-09 22:07:31,446 INFO L226 Difference]: Without dead ends: 389 [2018-04-09 22:07:31,451 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5988 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=5601, Invalid=21459, Unknown=0, NotChecked=0, Total=27060 [2018-04-09 22:07:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-04-09 22:07:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 341. [2018-04-09 22:07:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-04-09 22:07:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 360 transitions. [2018-04-09 22:07:31,461 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 360 transitions. Word has length 161 [2018-04-09 22:07:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:31,461 INFO L459 AbstractCegarLoop]: Abstraction has 341 states and 360 transitions. [2018-04-09 22:07:31,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-04-09 22:07:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 360 transitions. [2018-04-09 22:07:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-04-09 22:07:31,462 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:31,462 INFO L355 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:31,462 INFO L408 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:31,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1112528005, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:31,468 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:31,506 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 4 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:31,916 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 4 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:32,632 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:32,633 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2018-04-09 22:07:32,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-09 22:07:32,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-09 22:07:32,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=3364, Unknown=0, NotChecked=0, Total=4556 [2018-04-09 22:07:32,634 INFO L87 Difference]: Start difference. First operand 341 states and 360 transitions. Second operand 68 states. [2018-04-09 22:07:35,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:35,549 INFO L93 Difference]: Finished difference Result 672 states and 710 transitions. [2018-04-09 22:07:35,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-09 22:07:35,549 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 172 [2018-04-09 22:07:35,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:35,551 INFO L225 Difference]: With dead ends: 672 [2018-04-09 22:07:35,551 INFO L226 Difference]: Without dead ends: 341 [2018-04-09 22:07:35,553 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6512 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6516, Invalid=14364, Unknown=0, NotChecked=0, Total=20880 [2018-04-09 22:07:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-04-09 22:07:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-04-09 22:07:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-04-09 22:07:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 344 transitions. [2018-04-09 22:07:35,561 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 344 transitions. Word has length 172 [2018-04-09 22:07:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:35,562 INFO L459 AbstractCegarLoop]: Abstraction has 341 states and 344 transitions. [2018-04-09 22:07:35,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-09 22:07:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 344 transitions. [2018-04-09 22:07:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-04-09 22:07:35,563 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:35,563 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:35,563 INFO L408 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash -695953115, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:35,571 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:35,634 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:36,897 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:40,334 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:40,335 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-09 22:07:40,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-09 22:07:40,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-09 22:07:40,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=14979, Unknown=0, NotChecked=0, Total=16256 [2018-04-09 22:07:40,337 INFO L87 Difference]: Start difference. First operand 341 states and 344 transitions. Second operand 128 states. [2018-04-09 22:07:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:07:45,938 INFO L93 Difference]: Finished difference Result 359 states and 363 transitions. [2018-04-09 22:07:45,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-09 22:07:45,939 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 304 [2018-04-09 22:07:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:07:45,941 INFO L225 Difference]: With dead ends: 359 [2018-04-09 22:07:45,941 INFO L226 Difference]: Without dead ends: 358 [2018-04-09 22:07:45,943 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3540, Invalid=32370, Unknown=0, NotChecked=0, Total=35910 [2018-04-09 22:07:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-04-09 22:07:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 349. [2018-04-09 22:07:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-04-09 22:07:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-04-09 22:07:45,958 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 304 [2018-04-09 22:07:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:07:45,959 INFO L459 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-04-09 22:07:45,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-09 22:07:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-04-09 22:07:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-04-09 22:07:45,961 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:07:45,961 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:07:45,961 INFO L408 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:07:45,962 INFO L82 PathProgramCache]: Analyzing trace with hash -99710033, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:07:45,971 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:07:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:07:46,045 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:07:46,049 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-09 22:07:46,050 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:07:46,053 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:07:46,053 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:07:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:48,339 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:07:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:07:51,749 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:07:51,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-04-09 22:07:51,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-04-09 22:07:51,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-04-09 22:07:51,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1423, Invalid=16937, Unknown=0, NotChecked=0, Total=18360 [2018-04-09 22:07:51,750 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 136 states. [2018-04-09 22:08:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:08:01,811 INFO L93 Difference]: Finished difference Result 358 states and 362 transitions. [2018-04-09 22:08:01,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-04-09 22:08:01,811 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 305 [2018-04-09 22:08:01,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:08:01,813 INFO L225 Difference]: With dead ends: 358 [2018-04-09 22:08:01,813 INFO L226 Difference]: Without dead ends: 357 [2018-04-09 22:08:01,814 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11056 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4956, Invalid=49100, Unknown=0, NotChecked=0, Total=54056 [2018-04-09 22:08:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-04-09 22:08:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 350. [2018-04-09 22:08:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-04-09 22:08:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 354 transitions. [2018-04-09 22:08:01,829 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 354 transitions. Word has length 305 [2018-04-09 22:08:01,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:08:01,829 INFO L459 AbstractCegarLoop]: Abstraction has 350 states and 354 transitions. [2018-04-09 22:08:01,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-04-09 22:08:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 354 transitions. [2018-04-09 22:08:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-04-09 22:08:01,832 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:08:01,832 INFO L355 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:08:01,832 INFO L408 AbstractCegarLoop]: === Iteration 20 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:08:01,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1086306464, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:08:01,839 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:08:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:08:01,900 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:08:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:08:03,356 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:08:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:08:05,766 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:08:05,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [69, 69] imperfect sequences [] total 134 [2018-04-09 22:08:05,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-04-09 22:08:05,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-04-09 22:08:05,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3467, Invalid=14355, Unknown=0, NotChecked=0, Total=17822 [2018-04-09 22:08:05,768 INFO L87 Difference]: Start difference. First operand 350 states and 354 transitions. Second operand 134 states. [2018-04-09 22:08:09,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:08:09,595 INFO L93 Difference]: Finished difference Result 683 states and 692 transitions. [2018-04-09 22:08:09,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-04-09 22:08:09,595 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 313 [2018-04-09 22:08:09,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:08:09,597 INFO L225 Difference]: With dead ends: 683 [2018-04-09 22:08:09,597 INFO L226 Difference]: Without dead ends: 349 [2018-04-09 22:08:09,599 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 491 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12977 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13102, Invalid=40954, Unknown=0, NotChecked=0, Total=54056 [2018-04-09 22:08:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-04-09 22:08:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2018-04-09 22:08:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-04-09 22:08:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 349 transitions. [2018-04-09 22:08:09,607 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 349 transitions. Word has length 313 [2018-04-09 22:08:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:08:09,608 INFO L459 AbstractCegarLoop]: Abstraction has 346 states and 349 transitions. [2018-04-09 22:08:09,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-04-09 22:08:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 349 transitions. [2018-04-09 22:08:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-04-09 22:08:09,609 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:08:09,609 INFO L355 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:08:09,609 INFO L408 AbstractCegarLoop]: === Iteration 21 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:08:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash 803178373, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:08:09,626 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:08:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:08:09,688 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:08:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4251 backedges. 4 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:08:11,006 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:08:11,232 WARN L148 SmtUtils]: Spent 220ms on a formula simplification that was a NOOP. DAG size: 165 [2018-04-09 22:08:11,438 WARN L148 SmtUtils]: Spent 202ms on a formula simplification that was a NOOP. DAG size: 165 [2018-04-09 22:08:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4251 backedges. 4 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:08:12,675 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:08:12,675 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 131 [2018-04-09 22:08:12,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-04-09 22:08:12,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-04-09 22:08:12,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3396, Invalid=13634, Unknown=0, NotChecked=0, Total=17030 [2018-04-09 22:08:12,677 INFO L87 Difference]: Start difference. First operand 346 states and 349 transitions. Second operand 131 states. [2018-04-09 22:08:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:08:14,671 INFO L93 Difference]: Finished difference Result 679 states and 685 transitions. [2018-04-09 22:08:14,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-04-09 22:08:14,671 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 316 [2018-04-09 22:08:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:08:14,673 INFO L225 Difference]: With dead ends: 679 [2018-04-09 22:08:14,673 INFO L226 Difference]: Without dead ends: 346 [2018-04-09 22:08:14,675 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 500 SyntacticMatches, 2 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14761 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9634, Invalid=27808, Unknown=0, NotChecked=0, Total=37442 [2018-04-09 22:08:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-04-09 22:08:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-04-09 22:08:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-04-09 22:08:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 348 transitions. [2018-04-09 22:08:14,683 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 348 transitions. Word has length 316 [2018-04-09 22:08:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:08:14,683 INFO L459 AbstractCegarLoop]: Abstraction has 346 states and 348 transitions. [2018-04-09 22:08:14,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-04-09 22:08:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 348 transitions. [2018-04-09 22:08:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-04-09 22:08:14,684 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:08:14,684 INFO L355 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:08:14,685 INFO L408 AbstractCegarLoop]: === Iteration 22 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:08:14,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1873262976, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:08:14,694 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:08:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:08:14,771 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:08:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4532 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-09 22:08:14,850 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:08:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4532 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-09 22:08:14,930 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:08:14,931 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-09 22:08:14,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-09 22:08:14,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-09 22:08:14,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-04-09 22:08:14,932 INFO L87 Difference]: Start difference. First operand 346 states and 348 transitions. Second operand 9 states. [2018-04-09 22:08:14,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:08:14,991 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-04-09 22:08:14,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-09 22:08:14,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 325 [2018-04-09 22:08:14,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:08:14,994 INFO L225 Difference]: With dead ends: 362 [2018-04-09 22:08:14,994 INFO L226 Difference]: Without dead ends: 361 [2018-04-09 22:08:14,994 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 641 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-04-09 22:08:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-04-09 22:08:15,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 343. [2018-04-09 22:08:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-04-09 22:08:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 345 transitions. [2018-04-09 22:08:15,004 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 345 transitions. Word has length 325 [2018-04-09 22:08:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:08:15,005 INFO L459 AbstractCegarLoop]: Abstraction has 343 states and 345 transitions. [2018-04-09 22:08:15,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-09 22:08:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 345 transitions. [2018-04-09 22:08:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-04-09 22:08:15,008 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:08:15,008 INFO L355 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:08:15,008 INFO L408 AbstractCegarLoop]: === Iteration 23 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:08:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1230984506, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:08:15,017 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:08:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:08:15,101 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:08:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-09 22:08:15,206 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:08:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-09 22:08:15,319 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:08:15,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-04-09 22:08:15,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-09 22:08:15,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-09 22:08:15,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-09 22:08:15,321 INFO L87 Difference]: Start difference. First operand 343 states and 345 transitions. Second operand 8 states. [2018-04-09 22:08:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:08:15,400 INFO L93 Difference]: Finished difference Result 395 states and 401 transitions. [2018-04-09 22:08:15,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-09 22:08:15,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 332 [2018-04-09 22:08:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:08:15,401 INFO L225 Difference]: With dead ends: 395 [2018-04-09 22:08:15,401 INFO L226 Difference]: Without dead ends: 375 [2018-04-09 22:08:15,402 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-04-09 22:08:15,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-04-09 22:08:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 365. [2018-04-09 22:08:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-04-09 22:08:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 369 transitions. [2018-04-09 22:08:15,411 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 369 transitions. Word has length 332 [2018-04-09 22:08:15,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:08:15,412 INFO L459 AbstractCegarLoop]: Abstraction has 365 states and 369 transitions. [2018-04-09 22:08:15,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-09 22:08:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 369 transitions. [2018-04-09 22:08:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2018-04-09 22:08:15,419 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:08:15,420 INFO L355 BasicCegarLoop]: trace histogram [99, 96, 96, 96, 96, 96, 96, 96, 96, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:08:15,420 INFO L408 AbstractCegarLoop]: === Iteration 24 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:08:15,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2111731802, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:08:15,430 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:08:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:08:15,620 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:08:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 41685 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-04-09 22:08:16,045 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:08:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 41685 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-04-09 22:08:16,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:08:16,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-09 22:08:16,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-09 22:08:16,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-09 22:08:16,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-04-09 22:08:16,465 INFO L87 Difference]: Start difference. First operand 365 states and 369 transitions. Second operand 16 states. [2018-04-09 22:08:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:08:16,637 INFO L93 Difference]: Finished difference Result 439 states and 451 transitions. [2018-04-09 22:08:16,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-09 22:08:16,638 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 950 [2018-04-09 22:08:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:08:16,641 INFO L225 Difference]: With dead ends: 439 [2018-04-09 22:08:16,641 INFO L226 Difference]: Without dead ends: 419 [2018-04-09 22:08:16,642 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1911 GetRequests, 1885 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-04-09 22:08:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-04-09 22:08:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2018-04-09 22:08:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-04-09 22:08:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 417 transitions. [2018-04-09 22:08:16,664 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 417 transitions. Word has length 950 [2018-04-09 22:08:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:08:16,665 INFO L459 AbstractCegarLoop]: Abstraction has 409 states and 417 transitions. [2018-04-09 22:08:16,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-09 22:08:16,665 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 417 transitions. [2018-04-09 22:08:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2187 [2018-04-09 22:08:16,705 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:08:16,706 INFO L355 BasicCegarLoop]: trace histogram [231, 224, 224, 224, 224, 224, 224, 224, 224, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:08:16,706 INFO L408 AbstractCegarLoop]: === Iteration 25 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:08:16,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1746794854, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:08:16,715 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:08:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:08:17,309 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:08:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 228375 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-04-09 22:08:19,108 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:08:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 228375 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-04-09 22:08:20,765 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:08:20,765 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-04-09 22:08:20,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-09 22:08:20,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-09 22:08:20,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-04-09 22:08:20,768 INFO L87 Difference]: Start difference. First operand 409 states and 417 transitions. Second operand 32 states. [2018-04-09 22:08:21,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:08:21,488 INFO L93 Difference]: Finished difference Result 527 states and 551 transitions. [2018-04-09 22:08:21,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-09 22:08:21,488 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 2186 [2018-04-09 22:08:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:08:21,492 INFO L225 Difference]: With dead ends: 527 [2018-04-09 22:08:21,492 INFO L226 Difference]: Without dead ends: 507 [2018-04-09 22:08:21,493 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4399 GetRequests, 4341 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-04-09 22:08:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-04-09 22:08:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 497. [2018-04-09 22:08:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-04-09 22:08:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 513 transitions. [2018-04-09 22:08:21,510 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 513 transitions. Word has length 2186 [2018-04-09 22:08:21,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:08:21,512 INFO L459 AbstractCegarLoop]: Abstraction has 497 states and 513 transitions. [2018-04-09 22:08:21,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-09 22:08:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 513 transitions. [2018-04-09 22:08:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4659 [2018-04-09 22:08:21,613 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:08:21,615 INFO L355 BasicCegarLoop]: trace histogram [495, 480, 480, 480, 480, 480, 480, 480, 480, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:08:21,615 INFO L408 AbstractCegarLoop]: === Iteration 26 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:08:21,616 INFO L82 PathProgramCache]: Analyzing trace with hash -214547686, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:08:21,624 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:08:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:08:22,628 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:08:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1051275 backedges. 0 proven. 1185 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-04-09 22:08:28,670 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:08:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1051275 backedges. 0 proven. 1185 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-04-09 22:08:34,904 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:08:34,905 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-04-09 22:08:34,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-09 22:08:34,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-09 22:08:34,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2018-04-09 22:08:34,909 INFO L87 Difference]: Start difference. First operand 497 states and 513 transitions. Second operand 64 states. [2018-04-09 22:08:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:08:36,203 INFO L93 Difference]: Finished difference Result 703 states and 751 transitions. [2018-04-09 22:08:36,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-09 22:08:36,204 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 4658 [2018-04-09 22:08:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:08:36,211 INFO L225 Difference]: With dead ends: 703 [2018-04-09 22:08:36,211 INFO L226 Difference]: Without dead ends: 683 [2018-04-09 22:08:36,213 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 9375 GetRequests, 9253 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4867, Invalid=10385, Unknown=0, NotChecked=0, Total=15252 [2018-04-09 22:08:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-04-09 22:08:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 673. [2018-04-09 22:08:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2018-04-09 22:08:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 705 transitions. [2018-04-09 22:08:36,241 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 705 transitions. Word has length 4658 [2018-04-09 22:08:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:08:36,244 INFO L459 AbstractCegarLoop]: Abstraction has 673 states and 705 transitions. [2018-04-09 22:08:36,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-09 22:08:36,245 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 705 transitions. [2018-04-09 22:08:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9603 [2018-04-09 22:08:36,628 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:08:36,631 INFO L355 BasicCegarLoop]: trace histogram [1023, 992, 992, 992, 992, 992, 992, 992, 992, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:08:36,631 INFO L408 AbstractCegarLoop]: === Iteration 27 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:08:36,632 INFO L82 PathProgramCache]: Analyzing trace with hash -321700838, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:08:36,638 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:08:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:08:38,336 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:09:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4495155 backedges. 0 proven. 5177 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-04-09 22:09:02,372 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:09:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4495155 backedges. 0 proven. 5177 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-04-09 22:09:26,434 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:09:26,435 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-04-09 22:09:26,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-09 22:09:26,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-09 22:09:26,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-04-09 22:09:26,441 INFO L87 Difference]: Start difference. First operand 673 states and 705 transitions. Second operand 65 states. [2018-04-09 22:09:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:09:28,115 INFO L93 Difference]: Finished difference Result 714 states and 748 transitions. [2018-04-09 22:09:28,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-09 22:09:28,116 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 9602 [2018-04-09 22:09:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:09:28,123 INFO L225 Difference]: With dead ends: 714 [2018-04-09 22:09:28,124 INFO L226 Difference]: Without dead ends: 694 [2018-04-09 22:09:28,125 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 19265 GetRequests, 19077 SyntacticMatches, 63 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5673 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5118, Invalid=10884, Unknown=0, NotChecked=0, Total=16002 [2018-04-09 22:09:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2018-04-09 22:09:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 684. [2018-04-09 22:09:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2018-04-09 22:09:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 717 transitions. [2018-04-09 22:09:28,159 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 717 transitions. Word has length 9602 [2018-04-09 22:09:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:09:28,165 INFO L459 AbstractCegarLoop]: Abstraction has 684 states and 717 transitions. [2018-04-09 22:09:28,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-09 22:09:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 717 transitions. [2018-04-09 22:09:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9912 [2018-04-09 22:09:28,600 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:09:28,604 INFO L355 BasicCegarLoop]: trace histogram [1056, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:09:28,604 INFO L408 AbstractCegarLoop]: === Iteration 28 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:09:28,606 INFO L82 PathProgramCache]: Analyzing trace with hash 255025007, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:09:28,613 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:09:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:09:30,380 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:09:31,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-09 22:09:31,812 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:31,814 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:31,814 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:09:31,964 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:31,965 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:31,966 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:31,970 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:31,970 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:32,079 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:32,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:32,081 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,086 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,086 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:32,205 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:32,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:32,207 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,213 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,213 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:32,395 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:32,397 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:32,397 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,404 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,404 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:32,577 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:32,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:32,579 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,588 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,588 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:32,702 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:32,703 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:32,703 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,707 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,708 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:32,822 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:32,823 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:32,824 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,828 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,828 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:32,945 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:32,946 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:32,946 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,950 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:32,950 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:33,069 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:33,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:33,071 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,075 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,075 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:33,195 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:33,196 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:33,197 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,200 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,201 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:33,322 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:33,323 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:33,324 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,328 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,328 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:33,451 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:33,452 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:33,453 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,456 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,457 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:33,581 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:33,583 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:33,583 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,587 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,587 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:33,715 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:33,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:33,717 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,721 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,721 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:33,852 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:33,853 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:33,853 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,857 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,858 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:33,989 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:33,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:33,990 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,994 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:33,994 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:34,127 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:34,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:34,128 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,134 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,134 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:34,277 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:34,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:34,279 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,283 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,283 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:34,423 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:34,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:34,424 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,428 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,429 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:34,568 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:34,569 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:34,569 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,573 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,573 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:34,716 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:34,717 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:34,717 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,721 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,721 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:34,864 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:34,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:34,866 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,870 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:34,870 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:35,015 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:35,016 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:35,016 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,020 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,020 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:35,167 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:35,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:35,168 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,173 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,173 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:35,326 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:35,328 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:35,328 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,332 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,332 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:35,484 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:35,485 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:35,485 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,489 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,490 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:35,643 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:35,645 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:35,645 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,649 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,649 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:35,804 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:35,805 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:35,805 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,809 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,809 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:35,966 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:35,967 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:35,967 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,971 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:35,971 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:36,129 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:36,131 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:36,131 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:36,139 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:36,139 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:09:36,302 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:09:36,303 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-09 22:09:36,304 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:09:36,308 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:09:36,308 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2018-04-09 22:10:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4790000 backedges. 5055 proven. 294812 refuted. 0 times theorem prover too weak. 4490133 trivial. 0 not checked. [2018-04-09 22:10:04,824 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:10:11,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-04-09 22:10:11,035 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:10:11,035 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-04-09 22:10:11,036 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-09 22:10:11,040 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-09 22:10:11,040 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2018-04-09 22:10:11,269 WARN L148 SmtUtils]: Spent 222ms on a formula simplification that was a NOOP. DAG size: 167 [2018-04-09 22:10:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4790000 backedges. 0 proven. 294992 refuted. 0 times theorem prover too weak. 4495008 trivial. 0 not checked. [2018-04-09 22:10:39,807 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:10:39,809 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 76] total 137 [2018-04-09 22:10:39,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-04-09 22:10:39,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-04-09 22:10:39,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=17300, Unknown=0, NotChecked=0, Total=18632 [2018-04-09 22:10:39,815 INFO L87 Difference]: Start difference. First operand 684 states and 717 transitions. Second operand 137 states. [2018-04-09 22:10:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:10:51,364 INFO L93 Difference]: Finished difference Result 694 states and 726 transitions. [2018-04-09 22:10:51,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-04-09 22:10:51,365 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 9911 [2018-04-09 22:10:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:10:51,377 INFO L225 Difference]: With dead ends: 694 [2018-04-09 22:10:51,377 INFO L226 Difference]: Without dead ends: 689 [2018-04-09 22:10:51,382 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 19950 GetRequests, 19592 SyntacticMatches, 94 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17218 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=5702, Invalid=64788, Unknown=0, NotChecked=0, Total=70490 [2018-04-09 22:10:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2018-04-09 22:10:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 685. [2018-04-09 22:10:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2018-04-09 22:10:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 718 transitions. [2018-04-09 22:10:51,417 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 718 transitions. Word has length 9911 [2018-04-09 22:10:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:10:51,424 INFO L459 AbstractCegarLoop]: Abstraction has 685 states and 718 transitions. [2018-04-09 22:10:51,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-04-09 22:10:51,424 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 718 transitions. [2018-04-09 22:10:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9914 [2018-04-09 22:10:51,895 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:10:51,897 INFO L355 BasicCegarLoop]: trace histogram [1056, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:10:51,897 INFO L408 AbstractCegarLoop]: === Iteration 29 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-09 22:10:51,899 INFO L82 PathProgramCache]: Analyzing trace with hash 556335701, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:10:51,904 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:10:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:10:53,638 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown