java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 21:11:07,926 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 21:11:07,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 21:11:07,939 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 21:11:07,939 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 21:11:07,940 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 21:11:07,941 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 21:11:07,942 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 21:11:07,944 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 21:11:07,944 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 21:11:07,945 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 21:11:07,945 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 21:11:07,946 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 21:11:07,947 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 21:11:07,948 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 21:11:07,950 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 21:11:07,951 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 21:11:07,953 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 21:11:07,954 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 21:11:07,955 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 21:11:07,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 21:11:07,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 21:11:07,957 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 21:11:07,958 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 21:11:07,959 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 21:11:07,960 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 21:11:07,960 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 21:11:07,960 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 21:11:07,960 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 21:11:07,960 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 21:11:07,961 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 21:11:07,961 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-02 21:11:07,970 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 21:11:07,970 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 21:11:07,971 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 21:11:07,971 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 21:11:07,972 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 21:11:07,972 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 21:11:07,972 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 21:11:07,972 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 21:11:07,972 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 21:11:07,972 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 21:11:07,972 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 21:11:07,972 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 21:11:07,972 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 21:11:07,973 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 21:11:07,973 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 21:11:07,973 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 21:11:07,973 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 21:11:07,973 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 21:11:07,973 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 21:11:07,973 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 21:11:07,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 21:11:07,973 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 21:11:07,974 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 21:11:07,974 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 21:11:07,974 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-02 21:11:08,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 21:11:08,009 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 21:11:08,011 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 21:11:08,012 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 21:11:08,013 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 21:11:08,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets_true-unreach-call_true-valid-memsafety.i [2018-02-02 21:11:08,134 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 21:11:08,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 21:11:08,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 21:11:08,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 21:11:08,141 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 21:11:08,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e89376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08, skipping insertion in model container [2018-02-02 21:11:08,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,157 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:11:08,186 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:11:08,288 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:11:08,302 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:11:08,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08 WrapperNode [2018-02-02 21:11:08,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 21:11:08,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 21:11:08,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 21:11:08,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 21:11:08,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 21:11:08,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 21:11:08,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 21:11:08,341 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 21:11:08,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-02 21:11:08,375 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 21:11:08,375 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 21:11:08,375 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-02 21:11:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 21:11:08,377 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 21:11:08,377 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 21:11:08,789 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 21:11:08,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:08 BoogieIcfgContainer [2018-02-02 21:11:08,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 21:11:08,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 21:11:08,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 21:11:08,792 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 21:11:08,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:11:08" (1/3) ... [2018-02-02 21:11:08,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e83b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:08, skipping insertion in model container [2018-02-02 21:11:08,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (2/3) ... [2018-02-02 21:11:08,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e83b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:08, skipping insertion in model container [2018-02-02 21:11:08,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:08" (3/3) ... [2018-02-02 21:11:08,794 INFO L107 eAbstractionObserver]: Analyzing ICFG sll-buckets_true-unreach-call_true-valid-memsafety.i [2018-02-02 21:11:08,799 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 21:11:08,804 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2018-02-02 21:11:08,830 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 21:11:08,830 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 21:11:08,830 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 21:11:08,830 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 21:11:08,830 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 21:11:08,831 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 21:11:08,831 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 21:11:08,831 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 21:11:08,832 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 21:11:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2018-02-02 21:11:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-02 21:11:08,851 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:08,852 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:08,852 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash -102951268, now seen corresponding path program 1 times [2018-02-02 21:11:08,856 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:08,856 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:08,887 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:08,887 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:08,887 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:08,919 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:11:08,961 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:08,962 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:11:08,962 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:11:09,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:11:09,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:11:09,034 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 4 states. [2018-02-02 21:11:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:09,227 INFO L93 Difference]: Finished difference Result 194 states and 203 transitions. [2018-02-02 21:11:09,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 21:11:09,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-02-02 21:11:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:09,236 INFO L225 Difference]: With dead ends: 194 [2018-02-02 21:11:09,236 INFO L226 Difference]: Without dead ends: 190 [2018-02-02 21:11:09,237 INFO L554 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 [2018-02-02 21:11:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-02-02 21:11:09,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 149. [2018-02-02 21:11:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-02-02 21:11:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2018-02-02 21:11:09,274 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 8 [2018-02-02 21:11:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:09,275 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2018-02-02 21:11:09,275 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:11:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2018-02-02 21:11:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-02 21:11:09,276 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:09,276 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:09,276 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:09,276 INFO L82 PathProgramCache]: Analyzing trace with hash -102951267, now seen corresponding path program 1 times [2018-02-02 21:11:09,276 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:09,276 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:09,277 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,277 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:09,277 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:09,288 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:11:09,330 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:09,331 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:11:09,332 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:11:09,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:11:09,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:11:09,332 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand 4 states. [2018-02-02 21:11:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:09,463 INFO L93 Difference]: Finished difference Result 226 states and 236 transitions. [2018-02-02 21:11:09,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 21:11:09,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-02-02 21:11:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:09,465 INFO L225 Difference]: With dead ends: 226 [2018-02-02 21:11:09,465 INFO L226 Difference]: Without dead ends: 226 [2018-02-02 21:11:09,466 INFO L554 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 [2018-02-02 21:11:09,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-02-02 21:11:09,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 145. [2018-02-02 21:11:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-02-02 21:11:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 152 transitions. [2018-02-02 21:11:09,474 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 152 transitions. Word has length 8 [2018-02-02 21:11:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:09,474 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 152 transitions. [2018-02-02 21:11:09,474 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:11:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 152 transitions. [2018-02-02 21:11:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 21:11:09,475 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:09,475 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:09,475 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash 966243267, now seen corresponding path program 1 times [2018-02-02 21:11:09,475 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:09,476 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:09,476 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,477 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:09,477 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:09,499 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:11:09,542 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:09,542 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:11:09,543 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:11:09,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:11:09,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:11:09,543 INFO L87 Difference]: Start difference. First operand 145 states and 152 transitions. Second operand 6 states. [2018-02-02 21:11:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:09,767 INFO L93 Difference]: Finished difference Result 190 states and 199 transitions. [2018-02-02 21:11:09,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 21:11:09,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-02-02 21:11:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:09,769 INFO L225 Difference]: With dead ends: 190 [2018-02-02 21:11:09,769 INFO L226 Difference]: Without dead ends: 190 [2018-02-02 21:11:09,769 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-02-02 21:11:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-02-02 21:11:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 146. [2018-02-02 21:11:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-02-02 21:11:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 160 transitions. [2018-02-02 21:11:09,776 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 160 transitions. Word has length 14 [2018-02-02 21:11:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:09,776 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 160 transitions. [2018-02-02 21:11:09,776 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:11:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 160 transitions. [2018-02-02 21:11:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 21:11:09,777 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:09,777 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:09,777 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash 966243268, now seen corresponding path program 1 times [2018-02-02 21:11:09,777 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:09,778 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:09,779 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,779 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:09,779 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:09,794 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:11:09,862 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:09,863 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:11:09,863 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:11:09,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:11:09,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:11:09,863 INFO L87 Difference]: Start difference. First operand 146 states and 160 transitions. Second operand 6 states. [2018-02-02 21:11:10,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:10,085 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2018-02-02 21:11:10,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 21:11:10,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-02-02 21:11:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:10,086 INFO L225 Difference]: With dead ends: 200 [2018-02-02 21:11:10,086 INFO L226 Difference]: Without dead ends: 200 [2018-02-02 21:11:10,086 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-02-02 21:11:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-02-02 21:11:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 142. [2018-02-02 21:11:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-02-02 21:11:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 156 transitions. [2018-02-02 21:11:10,090 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 156 transitions. Word has length 14 [2018-02-02 21:11:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:10,090 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 156 transitions. [2018-02-02 21:11:10,090 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:11:10,090 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2018-02-02 21:11:10,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 21:11:10,091 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:10,091 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:10,091 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:10,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1611969301, now seen corresponding path program 1 times [2018-02-02 21:11:10,091 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:10,091 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:10,092 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,092 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:10,092 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:10,104 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:11:10,159 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:10,159 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:11:10,160 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:11:10,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:11:10,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:11:10,160 INFO L87 Difference]: Start difference. First operand 142 states and 156 transitions. Second operand 6 states. [2018-02-02 21:11:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:10,332 INFO L93 Difference]: Finished difference Result 197 states and 220 transitions. [2018-02-02 21:11:10,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 21:11:10,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-02 21:11:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:10,333 INFO L225 Difference]: With dead ends: 197 [2018-02-02 21:11:10,333 INFO L226 Difference]: Without dead ends: 197 [2018-02-02 21:11:10,334 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-02-02 21:11:10,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-02-02 21:11:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 139. [2018-02-02 21:11:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-02-02 21:11:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2018-02-02 21:11:10,339 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 20 [2018-02-02 21:11:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:10,340 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2018-02-02 21:11:10,340 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:11:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2018-02-02 21:11:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 21:11:10,341 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:10,341 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:10,341 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1611969302, now seen corresponding path program 1 times [2018-02-02 21:11:10,341 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:10,341 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:10,342 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,342 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:10,342 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:10,355 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:11:10,390 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:10,390 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:11:10,391 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:11:10,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:11:10,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:11:10,391 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand 6 states. [2018-02-02 21:11:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:10,521 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-02-02 21:11:10,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 21:11:10,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-02 21:11:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:10,522 INFO L225 Difference]: With dead ends: 182 [2018-02-02 21:11:10,522 INFO L226 Difference]: Without dead ends: 182 [2018-02-02 21:11:10,523 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-02-02 21:11:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-02-02 21:11:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 138. [2018-02-02 21:11:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-02-02 21:11:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2018-02-02 21:11:10,527 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 20 [2018-02-02 21:11:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:10,527 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2018-02-02 21:11:10,527 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:11:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2018-02-02 21:11:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 21:11:10,528 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:10,528 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:10,528 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:10,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1348719488, now seen corresponding path program 1 times [2018-02-02 21:11:10,528 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:10,528 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:10,529 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,529 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:10,529 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:10,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:11:10,568 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:10,569 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:11:10,569 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:11:10,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:11:10,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:11:10,569 INFO L87 Difference]: Start difference. First operand 138 states and 152 transitions. Second operand 4 states. [2018-02-02 21:11:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:10,700 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2018-02-02 21:11:10,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:11:10,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-02-02 21:11:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:10,701 INFO L225 Difference]: With dead ends: 177 [2018-02-02 21:11:10,701 INFO L226 Difference]: Without dead ends: 177 [2018-02-02 21:11:10,702 INFO L554 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 [2018-02-02 21:11:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-02-02 21:11:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 133. [2018-02-02 21:11:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-02-02 21:11:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2018-02-02 21:11:10,706 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 29 [2018-02-02 21:11:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:10,706 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2018-02-02 21:11:10,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:11:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2018-02-02 21:11:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 21:11:10,707 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:10,707 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:10,707 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1348719489, now seen corresponding path program 1 times [2018-02-02 21:11:10,707 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:10,708 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:10,708 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,708 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:10,708 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:10,723 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:11:10,767 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:10,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:11:10,767 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:11:10,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:11:10,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:11:10,768 INFO L87 Difference]: Start difference. First operand 133 states and 147 transitions. Second operand 4 states. [2018-02-02 21:11:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:10,865 INFO L93 Difference]: Finished difference Result 196 states and 219 transitions. [2018-02-02 21:11:10,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 21:11:10,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-02-02 21:11:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:10,866 INFO L225 Difference]: With dead ends: 196 [2018-02-02 21:11:10,866 INFO L226 Difference]: Without dead ends: 196 [2018-02-02 21:11:10,866 INFO L554 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 [2018-02-02 21:11:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-02-02 21:11:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 128. [2018-02-02 21:11:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-02-02 21:11:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2018-02-02 21:11:10,868 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 29 [2018-02-02 21:11:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:10,869 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2018-02-02 21:11:10,869 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:11:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2018-02-02 21:11:10,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-02-02 21:11:10,870 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:10,870 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:10,870 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-02-02 21:11:10,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1136810599, now seen corresponding path program 1 times [2018-02-02 21:11:10,870 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:10,871 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:10,871 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,871 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:10,872 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:10,888 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:10,894 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Unknown lemma type! at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:222) 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:397) 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) [2018-02-02 21:11:10,899 INFO L168 Benchmark]: Toolchain (without parser) took 2765.06 ms. Allocated memory was 397.4 MB in the beginning and 622.9 MB in the end (delta: 225.4 MB). Free memory was 354.1 MB in the beginning and 411.2 MB in the end (delta: -57.1 MB). Peak memory consumption was 168.3 MB. Max. memory is 5.3 GB. [2018-02-02 21:11:10,901 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 397.4 MB. Free memory is still 360.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:11:10,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.05 ms. Allocated memory is still 397.4 MB. Free memory was 354.1 MB in the beginning and 342.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. [2018-02-02 21:11:10,901 INFO L168 Benchmark]: Boogie Preprocessor took 31.15 ms. Allocated memory is still 397.4 MB. Free memory was 342.2 MB in the beginning and 339.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 5.3 GB. [2018-02-02 21:11:10,901 INFO L168 Benchmark]: RCFGBuilder took 449.17 ms. Allocated memory is still 397.4 MB. Free memory was 339.5 MB in the beginning and 298.4 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 5.3 GB. [2018-02-02 21:11:10,902 INFO L168 Benchmark]: TraceAbstraction took 2108.81 ms. Allocated memory was 397.4 MB in the beginning and 622.9 MB in the end (delta: 225.4 MB). Free memory was 297.0 MB in the beginning and 411.2 MB in the end (delta: -114.2 MB). Peak memory consumption was 111.3 MB. Max. memory is 5.3 GB. [2018-02-02 21:11:10,903 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 397.4 MB. Free memory is still 360.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 173.05 ms. Allocated memory is still 397.4 MB. Free memory was 354.1 MB in the beginning and 342.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.15 ms. Allocated memory is still 397.4 MB. Free memory was 342.2 MB in the beginning and 339.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 449.17 ms. Allocated memory is still 397.4 MB. Free memory was 339.5 MB in the beginning and 298.4 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2108.81 ms. Allocated memory was 397.4 MB in the beginning and 622.9 MB in the end (delta: 225.4 MB). Free memory was 297.0 MB in the beginning and 411.2 MB in the end (delta: -114.2 MB). Peak memory consumption was 111.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Unknown lemma type! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Unknown lemma type!: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-buckets_true-unreach-call_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_21-11-10-910.csv Received shutdown request...