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/array-memsafety/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a [2018-01-30 01:17:51,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 01:17:51,519 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 01:17:51,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 01:17:51,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 01:17:51,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 01:17:51,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 01:17:51,537 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 01:17:51,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 01:17:51,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 01:17:51,541 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 01:17:51,541 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 01:17:51,542 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 01:17:51,543 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 01:17:51,544 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 01:17:51,547 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 01:17:51,549 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 01:17:51,551 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 01:17:51,552 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 01:17:51,553 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 01:17:51,556 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-30 01:17:51,556 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-30 01:17:51,556 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-30 01:17:51,557 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-30 01:17:51,558 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-30 01:17:51,559 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-30 01:17:51,560 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-30 01:17:51,560 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-30 01:17:51,560 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-30 01:17:51,561 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 01:17:51,561 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 01:17:51,561 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 [2018-01-30 01:17:51,571 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 01:17:51,572 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 01:17:51,572 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 01:17:51,573 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 01:17:51,573 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 01:17:51,573 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 01:17:51,573 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 01:17:51,574 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 01:17:51,574 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 01:17:51,574 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-30 01:17:51,574 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 01:17:51,575 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 01:17:51,575 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 01:17:51,575 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-30 01:17:51,575 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-30 01:17:51,575 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-30 01:17:51,575 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 01:17:51,576 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 01:17:51,576 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 01:17:51,576 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 01:17:51,576 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 01:17:51,576 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 01:17:51,577 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 01:17:51,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 01:17:51,577 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 01:17:51,577 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 01:17:51,577 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 01:17:51,578 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 01:17:51,578 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 01:17:51,578 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 01:17:51,578 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 01:17:51,578 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 01:17:51,579 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 01:17:51,579 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 01:17:51,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 01:17:51,626 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 01:17:51,630 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 01:17:51,631 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 01:17:51,632 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 01:17:51,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i [2018-01-30 01:17:51,811 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 01:17:51,817 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 01:17:51,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 01:17:51,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 01:17:51,823 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 01:17:51,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 01:17:51" (1/1) ... [2018-01-30 01:17:51,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb0d8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:51, skipping insertion in model container [2018-01-30 01:17:51,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 01:17:51" (1/1) ... [2018-01-30 01:17:51,844 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 01:17:51,883 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 01:17:51,989 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 01:17:52,004 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 01:17:52,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52 WrapperNode [2018-01-30 01:17:52,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 01:17:52,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 01:17:52,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 01:17:52,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 01:17:52,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (1/1) ... [2018-01-30 01:17:52,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (1/1) ... [2018-01-30 01:17:52,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (1/1) ... [2018-01-30 01:17:52,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (1/1) ... [2018-01-30 01:17:52,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (1/1) ... [2018-01-30 01:17:52,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (1/1) ... [2018-01-30 01:17:52,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (1/1) ... [2018-01-30 01:17:52,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 01:17:52,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 01:17:52,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 01:17:52,039 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 01:17:52,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (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 [2018-01-30 01:17:52,087 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 01:17:52,087 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 01:17:52,087 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrnlen [2018-01-30 01:17:52,087 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure cstrnlen [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 01:17:52,088 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 01:17:52,277 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 01:17:52,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:17:52 BoogieIcfgContainer [2018-01-30 01:17:52,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 01:17:52,278 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 01:17:52,278 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 01:17:52,279 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 01:17:52,282 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:17:52" (1/1) ... [2018-01-30 01:17:52,289 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-30 01:17:52,289 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-30 01:17:52,289 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-30 01:17:52,332 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 5 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-30 01:17:52,356 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-30 01:17:52,414 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-30 01:18:01,627 INFO L311 AbstractInterpreter]: Visited 63 different actions 358 times. Merged at 37 different actions 176 times. Never widened. Found 22 fixpoints after 3 different actions. Largest state had 39 variables. [2018-01-30 01:18:01,630 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-30 01:18:01,639 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 2 [2018-01-30 01:18:01,639 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-30 01:18:01,640 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-30 01:18:01,640 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select (select |v_#memory_int_1| v_cstrnlen_~cp~2.base_3) v_cstrnlen_~cp~2.offset_3), at (SUMMARY for call #t~mem2 := read~int(~cp~2.base, ~cp~2.offset, 1); srcloc: L544''')) ((select |v_#memory_int_5| v_main_~nondetString1~4.base_2), at (SUMMARY for call write~int(0, ~nondetString1~4.base, ~nondetString1~4.offset + (~length1~4 - 1) * 1, 1); srcloc: L558)) [2018-01-30 01:18:01,643 INFO L547 PartitionManager]: partitioning result: [2018-01-30 01:18:01,644 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-30 01:18:01,644 INFO L561 PartitionManager]: at dimension 0 [2018-01-30 01:18:01,644 INFO L562 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-01-30 01:18:01,644 INFO L563 PartitionManager]: # location blocks :2 [2018-01-30 01:18:01,644 INFO L561 PartitionManager]: at dimension 1 [2018-01-30 01:18:01,644 INFO L562 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-30 01:18:01,644 INFO L563 PartitionManager]: # location blocks :1 [2018-01-30 01:18:01,645 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-30 01:18:01,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 01:18:01 BasicIcfg [2018-01-30 01:18:01,658 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 01:18:01,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 01:18:01,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 01:18:01,719 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 01:18:01,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 01:17:51" (1/4) ... [2018-01-30 01:18:01,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559dc4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 01:18:01, skipping insertion in model container [2018-01-30 01:18:01,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:17:52" (2/4) ... [2018-01-30 01:18:01,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559dc4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 01:18:01, skipping insertion in model container [2018-01-30 01:18:01,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:17:52" (3/4) ... [2018-01-30 01:18:01,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559dc4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 01:18:01, skipping insertion in model container [2018-01-30 01:18:01,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 01:18:01" (4/4) ... [2018-01-30 01:18:01,722 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-30 01:18:01,729 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 01:18:01,735 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-30 01:18:01,772 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 01:18:01,773 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 01:18:01,773 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 01:18:01,773 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 01:18:01,773 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 01:18:01,773 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 01:18:01,773 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 01:18:01,773 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 01:18:01,774 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 01:18:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-01-30 01:18:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-30 01:18:01,788 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:01,788 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:01,789 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:01,792 INFO L82 PathProgramCache]: Analyzing trace with hash 288227188, now seen corresponding path program 1 times [2018-01-30 01:18:01,793 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:01,794 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:01,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:01,831 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:01,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:01,872 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:01,948 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:18:01,948 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 01:18:01,950 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 01:18:01,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 01:18:01,957 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-30 01:18:01,959 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2018-01-30 01:18:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:18:02,053 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-01-30 01:18:02,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 01:18:02,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-30 01:18:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:18:02,068 INFO L225 Difference]: With dead ends: 68 [2018-01-30 01:18:02,069 INFO L226 Difference]: Without dead ends: 52 [2018-01-30 01:18:02,072 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-30 01:18:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-30 01:18:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-01-30 01:18:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-30 01:18:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-30 01:18:02,104 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 13 [2018-01-30 01:18:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:18:02,104 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-30 01:18:02,104 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 01:18:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-30 01:18:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-30 01:18:02,105 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:02,105 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:02,105 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:02,105 INFO L82 PathProgramCache]: Analyzing trace with hash 288227190, now seen corresponding path program 1 times [2018-01-30 01:18:02,105 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:02,106 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:02,106 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,106 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:02,107 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:02,117 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:02,196 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:18:02,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-30 01:18:02,198 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 01:18:02,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 01:18:02,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-30 01:18:02,198 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-30 01:18:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:18:02,248 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-01-30 01:18:02,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 01:18:02,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-01-30 01:18:02,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:18:02,250 INFO L225 Difference]: With dead ends: 52 [2018-01-30 01:18:02,251 INFO L226 Difference]: Without dead ends: 51 [2018-01-30 01:18:02,251 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-30 01:18:02,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-30 01:18:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-01-30 01:18:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-30 01:18:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-01-30 01:18:02,258 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 13 [2018-01-30 01:18:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:18:02,258 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-01-30 01:18:02,259 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 01:18:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-01-30 01:18:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-30 01:18:02,260 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:02,260 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:02,260 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1250042976, now seen corresponding path program 1 times [2018-01-30 01:18:02,260 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:02,261 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:02,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,262 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:02,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:02,282 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:02,356 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:18:02,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 01:18:02,356 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 01:18:02,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 01:18:02,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-30 01:18:02,357 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 4 states. [2018-01-30 01:18:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:18:02,496 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-01-30 01:18:02,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-30 01:18:02,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-01-30 01:18:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:18:02,498 INFO L225 Difference]: With dead ends: 51 [2018-01-30 01:18:02,498 INFO L226 Difference]: Without dead ends: 40 [2018-01-30 01:18:02,499 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-30 01:18:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-30 01:18:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-01-30 01:18:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-30 01:18:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-01-30 01:18:02,505 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 19 [2018-01-30 01:18:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:18:02,505 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-01-30 01:18:02,505 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 01:18:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-01-30 01:18:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-30 01:18:02,506 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:02,506 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:02,506 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:02,506 INFO L82 PathProgramCache]: Analyzing trace with hash -958628845, now seen corresponding path program 1 times [2018-01-30 01:18:02,506 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:02,506 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:02,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,507 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:02,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:02,520 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:02,608 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:18:02,609 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-30 01:18:02,609 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 01:18:02,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 01:18:02,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-30 01:18:02,609 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2018-01-30 01:18:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:18:02,704 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-01-30 01:18:02,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 01:18:02,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-30 01:18:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:18:02,705 INFO L225 Difference]: With dead ends: 51 [2018-01-30 01:18:02,705 INFO L226 Difference]: Without dead ends: 50 [2018-01-30 01:18:02,705 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-01-30 01:18:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-01-30 01:18:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-01-30 01:18:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-30 01:18:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-01-30 01:18:02,710 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 22 [2018-01-30 01:18:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:18:02,710 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-01-30 01:18:02,710 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 01:18:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-01-30 01:18:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-30 01:18:02,711 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:02,711 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:02,711 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash -958628843, now seen corresponding path program 1 times [2018-01-30 01:18:02,712 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:02,712 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:02,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,713 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:02,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:02,724 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:02,828 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:18:02,828 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-30 01:18:02,829 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 01:18:02,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 01:18:02,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-30 01:18:02,829 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 9 states. [2018-01-30 01:18:02,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:18:02,927 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-01-30 01:18:02,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 01:18:02,928 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-30 01:18:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:18:02,929 INFO L225 Difference]: With dead ends: 51 [2018-01-30 01:18:02,929 INFO L226 Difference]: Without dead ends: 50 [2018-01-30 01:18:02,930 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-30 01:18:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-01-30 01:18:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-01-30 01:18:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-30 01:18:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2018-01-30 01:18:02,936 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 22 [2018-01-30 01:18:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:18:02,936 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2018-01-30 01:18:02,936 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 01:18:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2018-01-30 01:18:02,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-30 01:18:02,937 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:02,938 INFO L350 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:02,938 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:02,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1879015571, now seen corresponding path program 1 times [2018-01-30 01:18:02,938 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:02,938 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:02,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,939 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:02,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:02,950 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:02,974 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:18:02,974 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 01:18:02,974 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 01:18:02,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 01:18:02,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 01:18:02,975 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 3 states. [2018-01-30 01:18:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:18:02,993 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-01-30 01:18:02,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 01:18:02,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-01-30 01:18:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:18:02,994 INFO L225 Difference]: With dead ends: 61 [2018-01-30 01:18:02,994 INFO L226 Difference]: Without dead ends: 44 [2018-01-30 01:18:02,995 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 01:18:02,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-30 01:18:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-01-30 01:18:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-30 01:18:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-01-30 01:18:03,001 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 34 [2018-01-30 01:18:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:18:03,002 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-01-30 01:18:03,002 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 01:18:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-01-30 01:18:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-30 01:18:03,003 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:03,003 INFO L350 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:03,004 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:03,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1511237317, now seen corresponding path program 1 times [2018-01-30 01:18:03,004 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:03,004 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:03,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:03,005 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:03,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:03,021 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-30 01:18:03,098 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:18:03,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-30 01:18:03,098 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 01:18:03,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 01:18:03,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-30 01:18:03,099 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2018-01-30 01:18:03,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:18:03,147 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-01-30 01:18:03,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 01:18:03,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-01-30 01:18:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:18:03,148 INFO L225 Difference]: With dead ends: 44 [2018-01-30 01:18:03,148 INFO L226 Difference]: Without dead ends: 43 [2018-01-30 01:18:03,149 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-01-30 01:18:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-30 01:18:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-01-30 01:18:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-30 01:18:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-01-30 01:18:03,152 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 36 [2018-01-30 01:18:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:18:03,152 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-01-30 01:18:03,152 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 01:18:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-01-30 01:18:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-30 01:18:03,153 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:03,153 INFO L350 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:03,153 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1511237319, now seen corresponding path program 1 times [2018-01-30 01:18:03,153 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:03,154 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:03,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:03,154 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:03,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:03,172 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:03,582 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:18:03,582 INFO L209 onRefinementStrategy]: 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 [2018-01-30 01:18:03,594 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:03,623 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:18:03,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 13 [2018-01-30 01:18:03,659 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 01:18:03,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-01-30 01:18:03,686 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 11 treesize of output 10 [2018-01-30 01:18:03,686 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-30 01:18:03,688 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 01:18:03,693 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-30 01:18:03,693 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:25, output treesize:21 [2018-01-30 01:18:03,876 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-01-30 01:18:03,887 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-01-30 01:18:03,887 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-30 01:18:03,893 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-30 01:18:03,909 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-30 01:18:03,909 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-01-30 01:18:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:04,126 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:18:04,126 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2018-01-30 01:18:04,126 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 01:18:04,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 01:18:04,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2018-01-30 01:18:04,127 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 22 states. [2018-01-30 01:18:06,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:18:06,066 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2018-01-30 01:18:06,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 01:18:06,067 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2018-01-30 01:18:06,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:18:06,068 INFO L225 Difference]: With dead ends: 64 [2018-01-30 01:18:06,068 INFO L226 Difference]: Without dead ends: 63 [2018-01-30 01:18:06,069 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 01:18:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-01-30 01:18:06,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2018-01-30 01:18:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-30 01:18:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2018-01-30 01:18:06,076 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2018-01-30 01:18:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:18:06,076 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2018-01-30 01:18:06,076 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 01:18:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2018-01-30 01:18:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-30 01:18:06,078 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:18:06,078 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:18:06,078 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:18:06,078 INFO L82 PathProgramCache]: Analyzing trace with hash -83283463, now seen corresponding path program 2 times [2018-01-30 01:18:06,078 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:18:06,079 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:18:06,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:06,080 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:18:06,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:18:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:18:06,104 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:18:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:18:06,492 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:18:06,566 INFO L209 onRefinementStrategy]: 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 [2018-01-30 01:18:06,572 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:18:06,581 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:18:06,587 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:18:06,588 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:18:06,591 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:18:06,595 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 [2018-01-30 01:18:06,595 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 01:18:06,598 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 01:18:06,598 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-30 01:18:06,619 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2018-01-30 01:18:06,620 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-01-30 01:18:06,623 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_1 term size 6 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:270) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:445) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:237) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:396) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-30 01:18:06,626 INFO L168 Benchmark]: Toolchain (without parser) took 14814.05 ms. Allocated memory was 305.7 MB in the beginning and 1.2 GB in the end (delta: 863.0 MB). Free memory was 265.7 MB in the beginning and 565.7 MB in the end (delta: -300.0 MB). Peak memory consumption was 563.0 MB. Max. memory is 5.3 GB. [2018-01-30 01:18:06,626 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 01:18:06,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.87 ms. Allocated memory is still 305.7 MB. Free memory was 264.6 MB in the beginning and 254.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-30 01:18:06,627 INFO L168 Benchmark]: Boogie Preprocessor took 28.82 ms. Allocated memory is still 305.7 MB. Free memory was 254.4 MB in the beginning and 253.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-30 01:18:06,627 INFO L168 Benchmark]: RCFGBuilder took 238.83 ms. Allocated memory is still 305.7 MB. Free memory was 252.4 MB in the beginning and 235.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-30 01:18:06,628 INFO L168 Benchmark]: IcfgTransformer took 9380.21 ms. Allocated memory was 305.7 MB in the beginning and 988.3 MB in the end (delta: 682.6 MB). Free memory was 235.9 MB in the beginning and 536.3 MB in the end (delta: -300.4 MB). Peak memory consumption was 382.2 MB. Max. memory is 5.3 GB. [2018-01-30 01:18:06,628 INFO L168 Benchmark]: TraceAbstraction took 4965.67 ms. Allocated memory was 988.3 MB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 536.3 MB in the beginning and 565.7 MB in the end (delta: -29.4 MB). Peak memory consumption was 150.9 MB. Max. memory is 5.3 GB. [2018-01-30 01:18:06,630 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 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 191.87 ms. Allocated memory is still 305.7 MB. Free memory was 264.6 MB in the beginning and 254.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.82 ms. Allocated memory is still 305.7 MB. Free memory was 254.4 MB in the beginning and 253.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 238.83 ms. Allocated memory is still 305.7 MB. Free memory was 252.4 MB in the beginning and 235.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * IcfgTransformer took 9380.21 ms. Allocated memory was 305.7 MB in the beginning and 988.3 MB in the end (delta: 682.6 MB). Free memory was 235.9 MB in the beginning and 536.3 MB in the end (delta: -300.4 MB). Peak memory consumption was 382.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4965.67 ms. Allocated memory was 988.3 MB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 536.3 MB in the beginning and 565.7 MB in the end (delta: -29.4 MB). Peak memory consumption was 150.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 53 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 783 LocStat_NO_SUPPORTING_DISEQUALITIES : 218 LocStat_NO_DISJUNCTIONS : -106 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 72 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 104 TransStat_NO_SUPPORTING_DISEQUALITIES : 7 TransStat_NO_DISJUNCTIONS : 75 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.012085 RENAME_VARIABLES(MILLISECONDS) : 0.133700 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.000612 PROJECTAWAY(MILLISECONDS) : 0.072443 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.068143 DISJOIN(MILLISECONDS) : 0.335754 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.150625 ADD_EQUALITY(MILLISECONDS) : 0.021381 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010497 #CONJOIN_DISJUNCTIVE : 494 #RENAME_VARIABLES : 1094 #UNFREEZE : 0 #CONJOIN : 733 #PROJECTAWAY : 673 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 112 #RENAME_VARIABLES_DISJUNCTIVE : 1072 #ADD_EQUALITY : 105 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 6 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 2 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 2 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 2 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] : 2 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_1 term size 6 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_1 term size 6: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_01-18-06-638.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-30_01-18-06-638.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-30_01-18-06-638.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-30_01-18-06-638.csv Received shutdown request...