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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d4a2356 [2018-03-23 12:20:43,804 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-03-23 12:20:43,806 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-03-23 12:20:43,823 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-03-23 12:20:43,824 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-03-23 12:20:43,825 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-03-23 12:20:43,826 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-03-23 12:20:43,828 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-03-23 12:20:43,830 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-03-23 12:20:43,831 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-03-23 12:20:43,832 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-03-23 12:20:43,833 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-03-23 12:20:43,834 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-03-23 12:20:43,835 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-03-23 12:20:43,836 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-03-23 12:20:43,838 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-03-23 12:20:43,840 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-03-23 12:20:43,842 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-03-23 12:20:43,844 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-03-23 12:20:43,845 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-03-23 12:20:43,847 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-03-23 12:20:43,848 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-03-23 12:20:43,848 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-03-23 12:20:43,849 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-03-23 12:20:43,850 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-03-23 12:20:43,851 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-03-23 12:20:43,852 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-03-23 12:20:43,852 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-03-23 12:20:43,853 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-03-23 12:20:43,853 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-03-23 12:20:43,854 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-03-23 12:20:43,855 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-03-23 12:20:43,866 INFO L110 SettingsManager]: Loading preferences was successful [2018-03-23 12:20:43,866 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-03-23 12:20:43,867 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-03-23 12:20:43,867 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-03-23 12:20:43,867 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-03-23 12:20:43,867 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-03-23 12:20:43,868 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-03-23 12:20:43,868 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-03-23 12:20:43,868 INFO L133 SettingsManager]: * sizeof long=4 [2018-03-23 12:20:43,869 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-03-23 12:20:43,869 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-03-23 12:20:43,869 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-03-23 12:20:43,869 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-03-23 12:20:43,869 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-03-23 12:20:43,870 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-03-23 12:20:43,870 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-03-23 12:20:43,870 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-03-23 12:20:43,870 INFO L133 SettingsManager]: * sizeof long double=12 [2018-03-23 12:20:43,870 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-03-23 12:20:43,870 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-03-23 12:20:43,871 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-03-23 12:20:43,871 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-03-23 12:20:43,871 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-03-23 12:20:43,871 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-23 12:20:43,871 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-03-23 12:20:43,871 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-03-23 12:20:43,872 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-03-23 12:20:43,872 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-03-23 12:20:43,872 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-03-23 12:20:43,872 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-03-23 12:20:43,872 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-23 12:20:43,873 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-03-23 12:20:43,873 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-03-23 12:20:43,874 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-03-23 12:20:43,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-03-23 12:20:43,920 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-03-23 12:20:43,924 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-03-23 12:20:43,926 INFO L271 PluginConnector]: Initializing CDTParser... [2018-03-23 12:20:43,926 INFO L276 PluginConnector]: CDTParser initialized [2018-03-23 12:20:43,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-03-23 12:20:44,270 INFO L228 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG556b32d97 [2018-03-23 12:20:44,380 INFO L291 CDTParser]: IsIndexed: true [2018-03-23 12:20:44,380 INFO L292 CDTParser]: Found 1 translation units. [2018-03-23 12:20:44,381 INFO L171 CDTParser]: Scanning ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-03-23 12:20:44,382 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-03-23 12:20:44,382 INFO L215 ultiparseSymbolTable]: [2018-03-23 12:20:44,382 INFO L218 ultiparseSymbolTable]: Function table: [2018-03-23 12:20:44,382 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-03-23 12:20:44,383 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo ('foo') in ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-03-23 12:20:44,383 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-03-23 12:20:44,383 INFO L233 ultiparseSymbolTable]: [2018-03-23 12:20:44,398 INFO L334 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG556b32d97 [2018-03-23 12:20:44,402 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-03-23 12:20:44,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-03-23 12:20:44,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-03-23 12:20:44,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-03-23 12:20:44,411 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-03-23 12:20:44,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4017b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44, skipping insertion in model container [2018-03-23 12:20:44,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,430 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-23 12:20:44,442 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-23 12:20:44,581 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-23 12:20:44,606 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-23 12:20:44,610 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-03-23 12:20:44,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44 WrapperNode [2018-03-23 12:20:44,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-03-23 12:20:44,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-03-23 12:20:44,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-03-23 12:20:44,618 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-03-23 12:20:44,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-03-23 12:20:44,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-03-23 12:20:44,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-03-23 12:20:44,646 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-03-23 12:20:44,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-23 12:20:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-03-23 12:20:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-03-23 12:20:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo [2018-03-23 12:20:44,692 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-03-23 12:20:44,692 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo [2018-03-23 12:20:44,692 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-03-23 12:20:44,692 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-03-23 12:20:44,692 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-03-23 12:20:44,692 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-03-23 12:20:44,692 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-03-23 12:20:44,692 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-03-23 12:20:44,693 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-03-23 12:20:44,693 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-03-23 12:20:44,957 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-03-23 12:20:44,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.03 12:20:44 BoogieIcfgContainer [2018-03-23 12:20:44,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-03-23 12:20:44,959 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-03-23 12:20:44,959 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-03-23 12:20:44,960 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-03-23 12:20:44,963 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.03 12:20:44" (1/1) ... [2018-03-23 12:20:44,973 INFO L112 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-03-23 12:20:44,974 INFO L113 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-03-23 12:20:44,990 INFO L255 apSepIcfgTransformer]: Heap separator: starting memloc-array-style preprocessing [2018-03-23 12:20:45,004 INFO L271 apSepIcfgTransformer]: finished MemlocArrayUpdater, created 0 location literals (each corresponds to one heap write) [2018-03-23 12:20:45,016 INFO L322 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-03-23 12:20:45,063 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-03-23 12:20:47,547 INFO L314 AbstractInterpreter]: Visited 70 different actions 337 times. Merged at 46 different actions 162 times. Never widened. Found 30 fixpoints after 12 different actions. Largest state had 21 variables. [2018-03-23 12:20:47,549 INFO L334 apSepIcfgTransformer]: finished equality analysis [2018-03-23 12:20:47,555 INFO L195 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 1 [2018-03-23 12:20:47,556 INFO L344 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-03-23 12:20:47,556 INFO L345 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-03-23 12:20:47,556 INFO L347 apSepIcfgTransformer]: select infos: Set: ((select (select |v_#memory_int_1| v___U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~b.base_2) (+ v___U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~i~0_6 v___U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~b.offset_2)), at (SUMMARY for call #t~mem1 := read~int(~b.base, ~b.offset + ~i~0 * 1, 1); srcloc: L18')) [2018-03-23 12:20:47,559 INFO L311 HeapPartitionManager]: partitioning result: [2018-03-23 12:20:47,560 INFO L316 HeapPartitionManager]: location blocks for array group [#memory_int] [2018-03-23 12:20:47,560 INFO L325 HeapPartitionManager]: at dimension 0 [2018-03-23 12:20:47,560 INFO L326 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-03-23 12:20:47,560 INFO L327 HeapPartitionManager]: # location blocks :1 [2018-03-23 12:20:47,560 INFO L325 HeapPartitionManager]: at dimension 1 [2018-03-23 12:20:47,561 INFO L326 HeapPartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-03-23 12:20:47,561 INFO L327 HeapPartitionManager]: # location blocks :1 [2018-03-23 12:20:47,562 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-03-23 12:20:47,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.03 12:20:47 BasicIcfg [2018-03-23 12:20:47,575 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-03-23 12:20:47,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-03-23 12:20:47,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-03-23 12:20:47,579 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-03-23 12:20:47,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.03 12:20:44" (1/4) ... [2018-03-23 12:20:47,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17710477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.03 12:20:47, skipping insertion in model container [2018-03-23 12:20:47,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 12:20:44" (2/4) ... [2018-03-23 12:20:47,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17710477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.03 12:20:47, skipping insertion in model container [2018-03-23 12:20:47,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.03 12:20:44" (3/4) ... [2018-03-23 12:20:47,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17710477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.03 12:20:47, skipping insertion in model container [2018-03-23 12:20:47,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.03 12:20:47" (4/4) ... [2018-03-23 12:20:47,583 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-03-23 12:20:47,590 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-03-23 12:20:47,596 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-03-23 12:20:47,627 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-03-23 12:20:47,628 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-03-23 12:20:47,628 INFO L370 AbstractCegarLoop]: Hoare is true [2018-03-23 12:20:47,628 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-03-23 12:20:47,628 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-03-23 12:20:47,628 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-03-23 12:20:47,628 INFO L374 AbstractCegarLoop]: Difference is false [2018-03-23 12:20:47,628 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-03-23 12:20:47,629 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-03-23 12:20:47,629 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-03-23 12:20:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-03-23 12:20:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-03-23 12:20:47,645 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:47,646 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:47,646 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:47,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1068910584, now seen corresponding path program 1 times [2018-03-23 12:20:47,650 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:47,651 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:47,691 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:47,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:47,692 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:47,732 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:47,805 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 12:20:47,805 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-03-23 12:20:47,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-03-23 12:20:47,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-03-23 12:20:47,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-03-23 12:20:47,816 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2018-03-23 12:20:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:47,963 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2018-03-23 12:20:47,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-03-23 12:20:47,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-03-23 12:20:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:47,973 INFO L225 Difference]: With dead ends: 133 [2018-03-23 12:20:47,974 INFO L226 Difference]: Without dead ends: 78 [2018-03-23 12:20:47,977 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-03-23 12:20:47,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-03-23 12:20:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2018-03-23 12:20:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-03-23 12:20:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2018-03-23 12:20:48,015 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 9 [2018-03-23 12:20:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:48,015 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2018-03-23 12:20:48,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-03-23 12:20:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2018-03-23 12:20:48,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-03-23 12:20:48,016 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:48,016 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:48,017 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1115648547, now seen corresponding path program 1 times [2018-03-23 12:20:48,017 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:48,017 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:48,018 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:48,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:48,018 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:48,031 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:48,178 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 12:20:48,179 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-03-23 12:20:48,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-03-23 12:20:48,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-03-23 12:20:48,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-03-23 12:20:48,181 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 7 states. [2018-03-23 12:20:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:48,394 INFO L93 Difference]: Finished difference Result 172 states and 188 transitions. [2018-03-23 12:20:48,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-03-23 12:20:48,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-03-23 12:20:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:48,397 INFO L225 Difference]: With dead ends: 172 [2018-03-23 12:20:48,397 INFO L226 Difference]: Without dead ends: 121 [2018-03-23 12:20:48,398 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-03-23 12:20:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-03-23 12:20:48,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 88. [2018-03-23 12:20:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-03-23 12:20:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2018-03-23 12:20:48,407 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 18 [2018-03-23 12:20:48,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:48,408 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2018-03-23 12:20:48,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-03-23 12:20:48,408 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2018-03-23 12:20:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-03-23 12:20:48,409 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:48,409 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:48,409 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash -225366126, now seen corresponding path program 1 times [2018-03-23 12:20:48,409 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:48,409 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:48,410 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:48,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:48,410 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:48,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:48,461 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 12:20:48,461 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-03-23 12:20:48,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-23 12:20:48,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-23 12:20:48,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-03-23 12:20:48,462 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand 5 states. [2018-03-23 12:20:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:48,515 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2018-03-23 12:20:48,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-03-23 12:20:48,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-03-23 12:20:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:48,517 INFO L225 Difference]: With dead ends: 88 [2018-03-23 12:20:48,517 INFO L226 Difference]: Without dead ends: 87 [2018-03-23 12:20:48,517 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-03-23 12:20:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-03-23 12:20:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-03-23 12:20:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-03-23 12:20:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2018-03-23 12:20:48,525 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 19 [2018-03-23 12:20:48,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:48,525 INFO L459 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2018-03-23 12:20:48,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-23 12:20:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2018-03-23 12:20:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-03-23 12:20:48,526 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:48,526 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:48,526 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:48,526 INFO L82 PathProgramCache]: Analyzing trace with hash -225366124, now seen corresponding path program 1 times [2018-03-23 12:20:48,526 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:48,526 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:48,527 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:48,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:48,527 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:48,538 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:48,646 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 12:20:48,646 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-03-23 12:20:48,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-03-23 12:20:48,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-03-23 12:20:48,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-03-23 12:20:48,647 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 6 states. [2018-03-23 12:20:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:48,888 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2018-03-23 12:20:48,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-03-23 12:20:48,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-03-23 12:20:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:48,890 INFO L225 Difference]: With dead ends: 101 [2018-03-23 12:20:48,891 INFO L226 Difference]: Without dead ends: 100 [2018-03-23 12:20:48,891 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-03-23 12:20:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-03-23 12:20:48,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2018-03-23 12:20:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-03-23 12:20:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2018-03-23 12:20:48,903 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 19 [2018-03-23 12:20:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:48,903 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2018-03-23 12:20:48,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-03-23 12:20:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2018-03-23 12:20:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-03-23 12:20:48,905 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:48,905 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:48,905 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1537306562, now seen corresponding path program 1 times [2018-03-23 12:20:48,906 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:48,906 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:48,906 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:48,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:48,907 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:48,914 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:49,021 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:49,022 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:49,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:49,074 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:49,207 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-03-23 12:20:49,207 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2018-03-23 12:20:49,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-23 12:20:49,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-23 12:20:49,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-03-23 12:20:49,208 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 8 states. [2018-03-23 12:20:49,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:49,528 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2018-03-23 12:20:49,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-23 12:20:49,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-03-23 12:20:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:49,530 INFO L225 Difference]: With dead ends: 127 [2018-03-23 12:20:49,530 INFO L226 Difference]: Without dead ends: 106 [2018-03-23 12:20:49,531 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-03-23 12:20:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-03-23 12:20:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2018-03-23 12:20:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-03-23 12:20:49,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2018-03-23 12:20:49,543 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 19 [2018-03-23 12:20:49,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:49,544 INFO L459 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2018-03-23 12:20:49,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-23 12:20:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2018-03-23 12:20:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-03-23 12:20:49,545 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:49,545 INFO L353 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] [2018-03-23 12:20:49,545 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:49,546 INFO L82 PathProgramCache]: Analyzing trace with hash 184823418, now seen corresponding path program 1 times [2018-03-23 12:20:49,546 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:49,546 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:49,547 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:49,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:49,547 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:49,556 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:49,663 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:49,663 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:49,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:49,685 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:49,807 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-03-23 12:20:49,807 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-03-23 12:20:49,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-03-23 12:20:49,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-03-23 12:20:49,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-03-23 12:20:49,808 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 14 states. [2018-03-23 12:20:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:50,037 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2018-03-23 12:20:50,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-23 12:20:50,037 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2018-03-23 12:20:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:50,038 INFO L225 Difference]: With dead ends: 175 [2018-03-23 12:20:50,038 INFO L226 Difference]: Without dead ends: 102 [2018-03-23 12:20:50,038 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-03-23 12:20:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-03-23 12:20:50,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2018-03-23 12:20:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-03-23 12:20:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2018-03-23 12:20:50,048 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 27 [2018-03-23 12:20:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:50,048 INFO L459 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2018-03-23 12:20:50,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-03-23 12:20:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2018-03-23 12:20:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-03-23 12:20:50,050 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:50,050 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:50,050 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:50,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1232886480, now seen corresponding path program 1 times [2018-03-23 12:20:50,050 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:50,051 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:50,051 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:50,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:50,052 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:50,065 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-03-23 12:20:50,110 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:50,111 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:50,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:50,131 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-03-23 12:20:50,163 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 12:20:50,163 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-03-23 12:20:50,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-23 12:20:50,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-23 12:20:50,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-03-23 12:20:50,164 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 5 states. [2018-03-23 12:20:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:50,208 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2018-03-23 12:20:50,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-03-23 12:20:50,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-03-23 12:20:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:50,209 INFO L225 Difference]: With dead ends: 115 [2018-03-23 12:20:50,209 INFO L226 Difference]: Without dead ends: 114 [2018-03-23 12:20:50,210 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-03-23 12:20:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-03-23 12:20:50,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2018-03-23 12:20:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-03-23 12:20:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2018-03-23 12:20:50,219 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 37 [2018-03-23 12:20:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:50,220 INFO L459 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2018-03-23 12:20:50,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-23 12:20:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2018-03-23 12:20:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-03-23 12:20:50,221 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:50,221 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:50,221 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:50,222 INFO L82 PathProgramCache]: Analyzing trace with hash 729468996, now seen corresponding path program 1 times [2018-03-23 12:20:50,222 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:50,222 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:50,223 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:50,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:50,223 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:50,234 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:50,286 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:50,287 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:50,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:50,307 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:50,342 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 12:20:50,342 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-03-23 12:20:50,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-03-23 12:20:50,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-03-23 12:20:50,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-03-23 12:20:50,343 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand 9 states. [2018-03-23 12:20:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:50,414 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2018-03-23 12:20:50,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-23 12:20:50,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-03-23 12:20:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:50,415 INFO L225 Difference]: With dead ends: 147 [2018-03-23 12:20:50,415 INFO L226 Difference]: Without dead ends: 127 [2018-03-23 12:20:50,415 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-03-23 12:20:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-03-23 12:20:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2018-03-23 12:20:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-03-23 12:20:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2018-03-23 12:20:50,425 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 37 [2018-03-23 12:20:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:50,425 INFO L459 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2018-03-23 12:20:50,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-03-23 12:20:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2018-03-23 12:20:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-03-23 12:20:50,428 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:50,428 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:50,428 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:50,429 INFO L82 PathProgramCache]: Analyzing trace with hash 435225249, now seen corresponding path program 1 times [2018-03-23 12:20:50,429 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:50,429 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:50,430 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:50,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:50,430 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:50,441 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-03-23 12:20:50,575 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:50,575 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:50,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:50,593 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:50,614 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-03-23 12:20:50,615 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-23 12:20:50,618 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-23 12:20:50,618 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-23 12:20:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-03-23 12:20:50,665 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 12:20:50,665 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-03-23 12:20:50,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-23 12:20:50,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-23 12:20:50,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-03-23 12:20:50,666 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 8 states. [2018-03-23 12:20:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:50,787 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2018-03-23 12:20:50,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-23 12:20:50,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-03-23 12:20:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:50,788 INFO L225 Difference]: With dead ends: 124 [2018-03-23 12:20:50,788 INFO L226 Difference]: Without dead ends: 123 [2018-03-23 12:20:50,789 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-03-23 12:20:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-03-23 12:20:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2018-03-23 12:20:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-03-23 12:20:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2018-03-23 12:20:50,796 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 38 [2018-03-23 12:20:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:50,797 INFO L459 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2018-03-23 12:20:50,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-23 12:20:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2018-03-23 12:20:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-03-23 12:20:50,799 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:50,799 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:50,799 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:50,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1381672071, now seen corresponding path program 2 times [2018-03-23 12:20:50,799 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:50,800 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:50,800 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:50,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:50,801 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:50,811 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:50,898 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:50,898 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:50,904 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 12:20:50,915 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-03-23 12:20:50,915 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 12:20:50,917 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:51,019 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 12:20:51,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-03-23 12:20:51,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-03-23 12:20:51,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-03-23 12:20:51,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-03-23 12:20:51,021 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 19 states. [2018-03-23 12:20:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:51,471 INFO L93 Difference]: Finished difference Result 225 states and 244 transitions. [2018-03-23 12:20:51,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-03-23 12:20:51,471 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2018-03-23 12:20:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:51,473 INFO L225 Difference]: With dead ends: 225 [2018-03-23 12:20:51,473 INFO L226 Difference]: Without dead ends: 155 [2018-03-23 12:20:51,473 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2018-03-23 12:20:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-03-23 12:20:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2018-03-23 12:20:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-03-23 12:20:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2018-03-23 12:20:51,479 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 46 [2018-03-23 12:20:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:51,479 INFO L459 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2018-03-23 12:20:51,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-03-23 12:20:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2018-03-23 12:20:51,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-03-23 12:20:51,480 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:51,480 INFO L353 BasicCegarLoop]: trace histogram [4, 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] [2018-03-23 12:20:51,480 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:51,481 INFO L82 PathProgramCache]: Analyzing trace with hash 154524538, now seen corresponding path program 2 times [2018-03-23 12:20:51,481 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:51,481 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:51,481 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:51,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 12:20:51,481 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:51,489 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 12:20:51,610 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:51,610 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:51,618 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 12:20:51,638 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-03-23 12:20:51,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 12:20:51,640 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:51,673 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#mask~0.base| Int)) (and (= (store |c_old(#valid)| |main_~#mask~0.base| 0) |c_#valid|) (= (select |c_old(#valid)| |main_~#mask~0.base|) 0))) is different from true [2018-03-23 12:20:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-03-23 12:20:51,717 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-03-23 12:20:51,718 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2018-03-23 12:20:51,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-03-23 12:20:51,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-03-23 12:20:51,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=83, Unknown=1, NotChecked=18, Total=132 [2018-03-23 12:20:51,718 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand 12 states. [2018-03-23 12:20:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:52,021 INFO L93 Difference]: Finished difference Result 185 states and 204 transitions. [2018-03-23 12:20:52,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-03-23 12:20:52,057 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2018-03-23 12:20:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:52,058 INFO L225 Difference]: With dead ends: 185 [2018-03-23 12:20:52,058 INFO L226 Difference]: Without dead ends: 153 [2018-03-23 12:20:52,059 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=364, Unknown=2, NotChecked=42, Total=552 [2018-03-23 12:20:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-03-23 12:20:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 143. [2018-03-23 12:20:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-03-23 12:20:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 155 transitions. [2018-03-23 12:20:52,067 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 155 transitions. Word has length 47 [2018-03-23 12:20:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:52,067 INFO L459 AbstractCegarLoop]: Abstraction has 143 states and 155 transitions. [2018-03-23 12:20:52,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-03-23 12:20:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 155 transitions. [2018-03-23 12:20:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-03-23 12:20:52,068 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:52,068 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:52,068 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:52,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1717163537, now seen corresponding path program 3 times [2018-03-23 12:20:52,069 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:52,069 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:52,069 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:52,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 12:20:52,069 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:52,080 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-03-23 12:20:52,139 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:52,139 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:52,145 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-03-23 12:20:52,158 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-03-23 12:20:52,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 12:20:52,161 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-03-23 12:20:52,265 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 12:20:52,265 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2018-03-23 12:20:52,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-23 12:20:52,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-23 12:20:52,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-03-23 12:20:52,266 INFO L87 Difference]: Start difference. First operand 143 states and 155 transitions. Second operand 16 states. [2018-03-23 12:20:52,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:52,626 INFO L93 Difference]: Finished difference Result 172 states and 189 transitions. [2018-03-23 12:20:52,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-03-23 12:20:52,626 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2018-03-23 12:20:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:52,628 INFO L225 Difference]: With dead ends: 172 [2018-03-23 12:20:52,628 INFO L226 Difference]: Without dead ends: 171 [2018-03-23 12:20:52,629 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2018-03-23 12:20:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-03-23 12:20:52,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 142. [2018-03-23 12:20:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-03-23 12:20:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2018-03-23 12:20:52,642 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 56 [2018-03-23 12:20:52,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:52,643 INFO L459 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2018-03-23 12:20:52,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-23 12:20:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2018-03-23 12:20:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-03-23 12:20:52,644 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:52,644 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:52,644 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1692462560, now seen corresponding path program 2 times [2018-03-23 12:20:52,645 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:52,645 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:52,645 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:52,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 12:20:52,646 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:52,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-03-23 12:20:52,886 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:52,886 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:52,891 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 12:20:52,904 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-03-23 12:20:52,905 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 12:20:52,907 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:52,911 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-03-23 12:20:52,911 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-23 12:20:52,922 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-23 12:20:52,922 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-23 12:20:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-03-23 12:20:53,037 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 12:20:53,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2018-03-23 12:20:53,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-03-23 12:20:53,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-03-23 12:20:53,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-03-23 12:20:53,038 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand 20 states. [2018-03-23 12:20:53,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:53,586 INFO L93 Difference]: Finished difference Result 170 states and 187 transitions. [2018-03-23 12:20:53,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-03-23 12:20:53,586 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2018-03-23 12:20:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:53,587 INFO L225 Difference]: With dead ends: 170 [2018-03-23 12:20:53,588 INFO L226 Difference]: Without dead ends: 169 [2018-03-23 12:20:53,588 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2018-03-23 12:20:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-03-23 12:20:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 128. [2018-03-23 12:20:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-03-23 12:20:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2018-03-23 12:20:53,597 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 57 [2018-03-23 12:20:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:53,598 INFO L459 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2018-03-23 12:20:53,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-03-23 12:20:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2018-03-23 12:20:53,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-03-23 12:20:53,598 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:53,598 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:53,598 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:53,599 INFO L82 PathProgramCache]: Analyzing trace with hash 245732012, now seen corresponding path program 1 times [2018-03-23 12:20:53,599 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:53,599 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:53,599 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:53,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 12:20:53,600 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:53,605 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-03-23 12:20:53,704 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:53,704 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:53,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:53,743 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-03-23 12:20:53,841 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 12:20:53,842 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 15 [2018-03-23 12:20:53,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-03-23 12:20:53,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-03-23 12:20:53,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-03-23 12:20:53,842 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand 15 states. [2018-03-23 12:20:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:53,988 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2018-03-23 12:20:53,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-03-23 12:20:53,989 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2018-03-23 12:20:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:53,990 INFO L225 Difference]: With dead ends: 167 [2018-03-23 12:20:53,990 INFO L226 Difference]: Without dead ends: 155 [2018-03-23 12:20:53,990 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2018-03-23 12:20:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-03-23 12:20:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2018-03-23 12:20:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-03-23 12:20:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2018-03-23 12:20:54,002 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 59 [2018-03-23 12:20:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:54,002 INFO L459 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2018-03-23 12:20:54,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-03-23 12:20:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2018-03-23 12:20:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-03-23 12:20:54,004 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 12:20:54,004 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 12:20:54,004 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX]=== [2018-03-23 12:20:54,004 INFO L82 PathProgramCache]: Analyzing trace with hash -337153039, now seen corresponding path program 2 times [2018-03-23 12:20:54,004 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 12:20:54,004 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 12:20:54,005 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:54,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 12:20:54,005 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 12:20:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 12:20:54,015 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 12:20:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-03-23 12:20:54,093 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 12:20:54,093 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 12:20:54,102 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 12:20:54,127 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-03-23 12:20:54,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 12:20:54,130 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 12:20:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-23 12:20:54,290 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 12:20:54,290 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13] total 19 [2018-03-23 12:20:54,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-03-23 12:20:54,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-03-23 12:20:54,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-03-23 12:20:54,291 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand 19 states. [2018-03-23 12:20:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 12:20:54,540 INFO L93 Difference]: Finished difference Result 183 states and 201 transitions. [2018-03-23 12:20:54,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-03-23 12:20:54,540 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2018-03-23 12:20:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 12:20:54,541 INFO L225 Difference]: With dead ends: 183 [2018-03-23 12:20:54,541 INFO L226 Difference]: Without dead ends: 0 [2018-03-23 12:20:54,543 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2018-03-23 12:20:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-03-23 12:20:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-03-23 12:20:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-03-23 12:20:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-03-23 12:20:54,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2018-03-23 12:20:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 12:20:54,544 INFO L459 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-03-23 12:20:54,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-03-23 12:20:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-03-23 12:20:54,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-03-23 12:20:54,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-03-23 12:20:54,913 WARN L151 SmtUtils]: Spent 158ms on a formula simplification. DAG size of input: 40 DAG size of output 23 [2018-03-23 12:20:55,297 WARN L151 SmtUtils]: Spent 382ms on a formula simplification. DAG size of input: 68 DAG size of output 53 [2018-03-23 12:20:55,377 INFO L416 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-03-23 12:20:55,377 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L412 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L419 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-03-23 12:20:55,378 INFO L419 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point L25'''''(line 25) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point mainErr0AssertViolationARRAY_INDEX(line 27) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point L26''''''(lines 26 28) no Hoare annotation was computed. [2018-03-23 12:20:55,378 INFO L416 ceAbstractionStarter]: For program point L25'''(line 25) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L29(lines 29 33) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L27''''(line 27) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L412 ceAbstractionStarter]: At program point L27'(line 27) the Hoare annotation is: (let ((.cse0 (= |#valid| (store |old(#valid)| |main_~#mask~0.base| 1))) (.cse1 (= 32 (select |#length| |main_~#mask~0.base|))) (.cse2 (= 0 |main_~#mask~0.offset|)) (.cse3 (= (select |old(#valid)| |main_~#mask~0.base|) 0))) (or (and (and .cse0 .cse1 .cse2 (<= 1 main_~i~1) .cse3) (< main_~i~1 32)) (and (= 0 main_~i~1) .cse0 .cse1 .cse2 .cse3))) [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L25'(line 25) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L27'''(line 27) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L29'''(line 29) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L29''''''(lines 29 33) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L25''''(line 25) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L26''''(line 26) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point mainFINAL(lines 23 35) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L25''(line 25) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point mainEXIT(lines 23 35) no Hoare annotation was computed. [2018-03-23 12:20:55,379 INFO L416 ceAbstractionStarter]: For program point mainErr2EnsuresViolationMEMORY_LEAK(lines 23 35) no Hoare annotation was computed. [2018-03-23 12:20:55,380 INFO L412 ceAbstractionStarter]: At program point mainENTRY(lines 23 35) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-03-23 12:20:55,380 INFO L416 ceAbstractionStarter]: For program point L29''''(line 29) no Hoare annotation was computed. [2018-03-23 12:20:55,380 INFO L416 ceAbstractionStarter]: For program point mainErr1AssertViolationARRAY_INDEX(line 30) no Hoare annotation was computed. [2018-03-23 12:20:55,380 INFO L416 ceAbstractionStarter]: For program point L29''(lines 29 33) no Hoare annotation was computed. [2018-03-23 12:20:55,380 INFO L416 ceAbstractionStarter]: For program point L26''(lines 26 28) no Hoare annotation was computed. [2018-03-23 12:20:55,380 INFO L416 ceAbstractionStarter]: For program point L27''(line 27) no Hoare annotation was computed. [2018-03-23 12:20:55,380 INFO L412 ceAbstractionStarter]: At program point L26'''''(lines 26 28) the Hoare annotation is: (let ((.cse0 (= |#valid| (store |old(#valid)| |main_~#mask~0.base| 1))) (.cse1 (= 32 (select |#length| |main_~#mask~0.base|))) (.cse2 (= 0 |main_~#mask~0.offset|)) (.cse3 (= (select |old(#valid)| |main_~#mask~0.base|) 0))) (or (and .cse0 .cse1 .cse2 (= main_~i~1 0) .cse3) (and .cse0 .cse1 .cse2 (<= 1 main_~i~1) .cse3))) [2018-03-23 12:20:55,380 INFO L412 ceAbstractionStarter]: At program point L29'''''(lines 29 33) the Hoare annotation is: (let ((.cse0 (= |#valid| (store |old(#valid)| |main_~#mask~0.base| 1))) (.cse1 (= 32 (select |#length| |main_~#mask~0.base|))) (.cse2 (= 0 |main_~#mask~0.offset|)) (.cse3 (= (select |old(#valid)| |main_~#mask~0.base|) 0))) (or (and .cse0 .cse1 .cse2 (<= 1 main_~i~1) .cse3) (and .cse0 .cse1 .cse2 (= main_~i~1 0) .cse3))) [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point L30'(lines 30 32) no Hoare annotation was computed. [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point L26'''(line 26) no Hoare annotation was computed. [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX(line 18) no Hoare annotation was computed. [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point L17''''(line 17) no Hoare annotation was computed. [2018-03-23 12:20:55,381 INFO L419 ceAbstractionStarter]: At program point __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooENTRY(lines 14 21) the Hoare annotation is: true [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point L18'''(line 18) no Hoare annotation was computed. [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point L17'''''(line 17) no Hoare annotation was computed. [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooEXIT(lines 14 21) no Hoare annotation was computed. [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr2RequiresViolation(line 18) no Hoare annotation was computed. [2018-03-23 12:20:55,381 INFO L416 ceAbstractionStarter]: For program point L17'''(lines 17 19) no Hoare annotation was computed. [2018-03-23 12:20:55,382 INFO L416 ceAbstractionStarter]: For program point L17'''''''(lines 17 19) no Hoare annotation was computed. [2018-03-23 12:20:55,382 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooFINAL(lines 14 21) no Hoare annotation was computed. [2018-03-23 12:20:55,382 INFO L416 ceAbstractionStarter]: For program point L14(lines 14 21) no Hoare annotation was computed. [2018-03-23 12:20:55,382 INFO L416 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-03-23 12:20:55,382 INFO L416 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-03-23 12:20:55,382 INFO L416 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-03-23 12:20:55,382 INFO L416 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-03-23 12:20:55,382 INFO L412 ceAbstractionStarter]: At program point L17''''''(lines 17 19) the Hoare annotation is: (let ((.cse4 (= 1 __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~i~0)) (.cse0 (not (= 0 |__U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_#in~b.offset|))) (.cse3 (not (= (select |#valid| |__U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_#in~b.base|) 1))) (.cse5 (not (= (select |#length| |__U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_#in~b.base|) 32))) (.cse2 (= 0 __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~i~0))) (and (let ((.cse1 (<= __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~size 1))) (or .cse0 (and .cse1 .cse2) .cse3 (and .cse1 .cse4) .cse5 (< 1 |__U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_#in~size|) (and (= 2 __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~i~0) .cse1))) (let ((.cse6 (= __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~size 0))) (or .cse0 .cse3 (not (= 0 |__U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_#in~size|)) .cse5 (and .cse6 .cse4) (and .cse6 .cse2))) (let ((.cse8 (= 1 (select |#valid| __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~b.base))) (.cse10 (select |#length| __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~b.base)) (.cse7 (<= __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~size 31)) (.cse9 (= __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~b.offset 0))) (or .cse0 .cse3 (and .cse7 (and .cse8 (<= 1 __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_~i~0) .cse9) (= .cse10 32)) .cse5 (and .cse8 (= 32 .cse10) .cse7 .cse9 .cse2) (< 31 |__U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__foo_#in~size|))))) [2018-03-23 12:20:55,383 INFO L416 ceAbstractionStarter]: For program point L18''(line 18) no Hoare annotation was computed. [2018-03-23 12:20:55,383 INFO L416 ceAbstractionStarter]: For program point L17'(lines 17 19) no Hoare annotation was computed. [2018-03-23 12:20:55,383 INFO L416 ceAbstractionStarter]: For program point L18'(line 18) no Hoare annotation was computed. [2018-03-23 12:20:55,383 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysWithLenghtAtDeclaration_true_valid_memsafety_true_termination_c__fooErr1RequiresViolation(line 18) no Hoare annotation was computed. [2018-03-23 12:20:55,388 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,389 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,392 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,392 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,395 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,396 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,396 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,396 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,396 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,399 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,400 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,400 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,400 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,400 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,402 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,402 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,403 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,404 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.03 12:20:55 BasicIcfg [2018-03-23 12:20:55,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-03-23 12:20:55,406 INFO L168 Benchmark]: Toolchain (without parser) took 11003.94 ms. Allocated memory was 304.6 MB in the beginning and 771.2 MB in the end (delta: 466.6 MB). Free memory was 249.5 MB in the beginning and 588.8 MB in the end (delta: -339.2 MB). Peak memory consumption was 355.0 MB. Max. memory is 5.3 GB. [2018-03-23 12:20:55,407 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 304.6 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-03-23 12:20:55,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.85 ms. Allocated memory is still 304.6 MB. Free memory was 248.5 MB in the beginning and 239.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. [2018-03-23 12:20:55,408 INFO L168 Benchmark]: Boogie Preprocessor took 27.09 ms. Allocated memory is still 304.6 MB. Free memory was 239.4 MB in the beginning and 237.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-03-23 12:20:55,408 INFO L168 Benchmark]: RCFGBuilder took 312.77 ms. Allocated memory was 304.6 MB in the beginning and 466.1 MB in the end (delta: 161.5 MB). Free memory was 237.3 MB in the beginning and 433.2 MB in the end (delta: -195.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 5.3 GB. [2018-03-23 12:20:55,409 INFO L168 Benchmark]: IcfgTransformer took 2617.07 ms. Allocated memory was 466.1 MB in the beginning and 675.3 MB in the end (delta: 209.2 MB). Free memory was 431.8 MB in the beginning and 452.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 188.7 MB. Max. memory is 5.3 GB. [2018-03-23 12:20:55,409 INFO L168 Benchmark]: TraceAbstraction took 7829.05 ms. Allocated memory was 675.3 MB in the beginning and 771.2 MB in the end (delta: 95.9 MB). Free memory was 452.3 MB in the beginning and 588.8 MB in the end (delta: -136.4 MB). Peak memory consumption was 187.1 MB. Max. memory is 5.3 GB. [2018-03-23 12:20:55,411 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 304.6 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.85 ms. Allocated memory is still 304.6 MB. Free memory was 248.5 MB in the beginning and 239.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.09 ms. Allocated memory is still 304.6 MB. Free memory was 239.4 MB in the beginning and 237.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 312.77 ms. Allocated memory was 304.6 MB in the beginning and 466.1 MB in the end (delta: 161.5 MB). Free memory was 237.3 MB in the beginning and 433.2 MB in the end (delta: -195.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 5.3 GB. * IcfgTransformer took 2617.07 ms. Allocated memory was 466.1 MB in the beginning and 675.3 MB in the end (delta: 209.2 MB). Free memory was 431.8 MB in the beginning and 452.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 188.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 7829.05 ms. Allocated memory was 675.3 MB in the beginning and 771.2 MB in the end (delta: 95.9 MB). Free memory was 452.3 MB in the beginning and 588.8 MB in the end (delta: -136.4 MB). Peak memory consumption was 187.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 59 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 253 LocStat_NO_SUPPORTING_DISEQUALITIES : 104 LocStat_NO_DISJUNCTIONS : -118 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 79 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 60 TransStat_NO_SUPPORTING_DISEQUALITIES : 7 TransStat_NO_DISJUNCTIONS : 80 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.025259 RENAME_VARIABLES(MILLISECONDS) : 0.285147 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.001127 PROJECTAWAY(MILLISECONDS) : 0.242052 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.090904 DISJOIN(MILLISECONDS) : 0.212765 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.313381 ADD_EQUALITY(MILLISECONDS) : 0.037194 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.052570 #CONJOIN_DISJUNCTIVE : 433 #RENAME_VARIABLES : 925 #UNFREEZE : 0 #CONJOIN : 543 #PROJECTAWAY : 577 #ADD_WEAK_EQUALITY : 7 #DISJOIN : 92 #RENAME_VARIABLES_DISJUNCTIVE : 918 #ADD_EQUALITY : 60 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 1 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 1 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 1 COUNT_ARRAY_READS for [#memory_int] : 1 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 27]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant [2018-03-23 12:20:55,420 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,420 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,421 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,422 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((\valid == \old(\valid)[mask := 1] && 32 == unknown-#length-unknown[mask]) && 0 == mask) && i == 0) && \old(\valid)[mask] == 0) || ((((\valid == \old(\valid)[mask := 1] && 32 == unknown-#length-unknown[mask]) && 0 == mask) && 1 <= i) && \old(\valid)[mask] == 0) - InvariantResult [Line: 17]: Loop Invariant [2018-03-23 12:20:55,424 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,424 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,424 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,424 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,425 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,427 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,427 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,427 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,427 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,427 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (((((((!(0 == b) || (size <= 1 && 0 == i)) || !(\valid[b] == 1)) || (size <= 1 && 1 == i)) || !(unknown-#length-unknown[b] == 32)) || 1 < \old(size)) || (2 == i && size <= 1)) && (((((!(0 == b) || !(\valid[b] == 1)) || !(0 == \old(size))) || !(unknown-#length-unknown[b] == 32)) || (size == 0 && 1 == i)) || (size == 0 && 0 == i))) && (((((!(0 == b) || !(\valid[b] == 1)) || ((size <= 31 && (1 == \valid[b] && 1 <= i) && b == 0) && unknown-#length-unknown[b] == 32)) || !(unknown-#length-unknown[b] == 32)) || ((((1 == \valid[b] && 32 == unknown-#length-unknown[b]) && size <= 31) && b == 0) && 0 == i)) || 31 < \old(size)) - InvariantResult [Line: 29]: Loop Invariant [2018-03-23 12:20:55,429 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,429 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,430 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 12:20:55,430 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((\valid == \old(\valid)[mask := 1] && 32 == unknown-#length-unknown[mask]) && 0 == mask) && 1 <= i) && \old(\valid)[mask] == 0) || ((((\valid == \old(\valid)[mask := 1] && 32 == unknown-#length-unknown[mask]) && 0 == mask) && i == 0) && \old(\valid)[mask] == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 61 locations, 6 error locations. SAFE Result, 7.7s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 781 SDtfs, 1235 SDslu, 3913 SDs, 0 SdLazy, 2100 SolverSat, 170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 694 GetRequests, 442 SyntacticMatches, 12 SemanticMatches, 240 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 217 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 29 PreInvPairs, 51 NumberOfFragments, 294 HoareAnnotationTreeSize, 29 FomulaSimplifications, 1052 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1256 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1063 NumberOfCodeBlocks, 1014 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1037 ConstructedInterpolants, 2 QuantifiedInterpolants, 217969 SizeOfPredicates, 60 NumberOfNonLiveVariables, 790 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 26 InterpolantComputations, 7 PerfectInterpolantSequences, 356/704 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-03-23_12-20-55-436.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-03-23_12-20-55-436.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-03-23_12-20-55-436.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-03-23_12-20-55-436.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-03-23_12-20-55-436.csv Received shutdown request...