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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 08:44:49,154 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 08:44:49,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 08:44:49,168 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 08:44:49,168 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 08:44:49,169 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 08:44:49,169 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 08:44:49,171 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 08:44:49,172 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 08:44:49,173 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 08:44:49,174 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 08:44:49,174 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 08:44:49,175 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 08:44:49,176 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 08:44:49,176 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 08:44:49,178 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 08:44:49,179 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 08:44:49,181 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 08:44:49,182 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 08:44:49,183 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 08:44:49,184 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 08:44:49,188 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 08:44:49,188 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 08:44:49,189 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 08:44:49,197 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 08:44:49,197 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 08:44:49,198 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 08:44:49,199 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 08:44:49,199 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 08:44:49,199 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 08:44:49,199 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 08:44:49,199 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 08:44:49,199 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 08:44:49,200 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 08:44:49,200 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 08:44:49,200 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 08:44:49,200 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 08:44:49,200 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 08:44:49,200 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 08:44:49,200 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 08:44:49,201 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 08:44:49,201 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 08:44:49,201 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 08:44:49,201 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 08:44:49,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 08:44:49,201 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 08:44:49,202 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 08:44:49,202 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 08:44:49,202 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 08:44:49,230 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 08:44:49,238 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 08:44:49,240 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 08:44:49,241 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 08:44:49,242 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 08:44:49,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:44:49,367 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 08:44:49,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 08:44:49,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 08:44:49,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 08:44:49,372 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 08:44:49,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eeddf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49, skipping insertion in model container [2018-02-02 08:44:49,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,385 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:44:49,411 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:44:49,505 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:44:49,518 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:44:49,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49 WrapperNode [2018-02-02 08:44:49,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 08:44:49,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 08:44:49,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 08:44:49,525 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 08:44:49,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (1/1) ... [2018-02-02 08:44:49,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 08:44:49,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 08:44:49,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 08:44:49,553 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 08:44:49,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (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 08:44:49,599 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 08:44:49,599 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 08:44:49,600 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcmp [2018-02-02 08:44:49,600 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 08:44:49,600 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 08:44:49,600 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 08:44:49,600 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 08:44:49,600 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 08:44:49,600 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 08:44:49,601 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 08:44:49,601 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcmp [2018-02-02 08:44:49,601 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 08:44:49,601 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 08:44:49,601 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 08:44:49,761 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 08:44:49,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:44:49 BoogieIcfgContainer [2018-02-02 08:44:49,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 08:44:49,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 08:44:49,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 08:44:49,764 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 08:44:49,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:44:49" (1/3) ... [2018-02-02 08:44:49,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee9b3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:44:49, skipping insertion in model container [2018-02-02 08:44:49,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:44:49" (2/3) ... [2018-02-02 08:44:49,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee9b3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:44:49, skipping insertion in model container [2018-02-02 08:44:49,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:44:49" (3/3) ... [2018-02-02 08:44:49,766 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:44:49,772 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 08:44:49,776 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-02-02 08:44:49,803 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 08:44:49,804 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 08:44:49,804 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 08:44:49,804 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 08:44:49,804 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 08:44:49,804 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 08:44:49,804 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 08:44:49,805 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 08:44:49,805 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 08:44:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-02-02 08:44:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 08:44:49,822 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:49,823 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:49,823 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash 955833556, now seen corresponding path program 1 times [2018-02-02 08:44:49,829 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:49,829 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:49,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:49,861 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:49,861 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:49,908 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:50,004 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 08:44:50,005 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:50,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:44:50,007 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:44:50,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:44:50,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:44:50,017 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2018-02-02 08:44:50,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:50,137 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-02-02 08:44:50,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 08:44:50,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-02 08:44:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:50,146 INFO L225 Difference]: With dead ends: 52 [2018-02-02 08:44:50,146 INFO L226 Difference]: Without dead ends: 49 [2018-02-02 08:44:50,147 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 08:44:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-02-02 08:44:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-02-02 08:44:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 08:44:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-02-02 08:44:50,172 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 13 [2018-02-02 08:44:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:50,172 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-02-02 08:44:50,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:44:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-02-02 08:44:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 08:44:50,173 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:50,173 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:50,173 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:50,173 INFO L82 PathProgramCache]: Analyzing trace with hash 955833557, now seen corresponding path program 1 times [2018-02-02 08:44:50,173 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:50,173 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:50,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,175 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:50,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:50,189 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:50,327 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 08:44:50,327 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:50,327 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:44:50,329 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 08:44:50,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 08:44:50,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:44:50,329 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 6 states. [2018-02-02 08:44:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:50,391 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2018-02-02 08:44:50,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 08:44:50,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-02-02 08:44:50,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:50,392 INFO L225 Difference]: With dead ends: 48 [2018-02-02 08:44:50,392 INFO L226 Difference]: Without dead ends: 48 [2018-02-02 08:44:50,393 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-02-02 08:44:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-02 08:44:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-02-02 08:44:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-02-02 08:44:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-02-02 08:44:50,398 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 13 [2018-02-02 08:44:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:50,398 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-02-02 08:44:50,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 08:44:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-02-02 08:44:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 08:44:50,399 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:50,399 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:50,399 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:50,399 INFO L82 PathProgramCache]: Analyzing trace with hash -433930803, now seen corresponding path program 1 times [2018-02-02 08:44:50,399 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:50,399 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:50,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,400 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:50,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:50,412 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:50,461 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 08:44:50,461 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:50,461 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 08:44:50,461 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:44:50,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:44:50,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:44:50,462 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 5 states. [2018-02-02 08:44:50,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:50,514 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-02-02 08:44:50,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 08:44:50,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 08:44:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:50,515 INFO L225 Difference]: With dead ends: 47 [2018-02-02 08:44:50,515 INFO L226 Difference]: Without dead ends: 47 [2018-02-02 08:44:50,516 INFO L554 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 [2018-02-02 08:44:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-02-02 08:44:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-02-02 08:44:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-02-02 08:44:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-02-02 08:44:50,519 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 14 [2018-02-02 08:44:50,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:50,520 INFO L432 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-02-02 08:44:50,520 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:44:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-02-02 08:44:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 08:44:50,520 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:50,521 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:50,521 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:50,521 INFO L82 PathProgramCache]: Analyzing trace with hash -433930804, now seen corresponding path program 1 times [2018-02-02 08:44:50,521 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:50,521 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:50,522 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,522 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:50,522 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:50,532 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:50,552 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 08:44:50,552 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:50,553 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:44:50,553 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:44:50,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:44:50,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:44:50,553 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 4 states. [2018-02-02 08:44:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:50,617 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-02-02 08:44:50,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 08:44:50,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-02 08:44:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:50,618 INFO L225 Difference]: With dead ends: 46 [2018-02-02 08:44:50,618 INFO L226 Difference]: Without dead ends: 46 [2018-02-02 08:44:50,619 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 08:44:50,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-02-02 08:44:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-02-02 08:44:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-02-02 08:44:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-02-02 08:44:50,622 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 14 [2018-02-02 08:44:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:50,623 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-02-02 08:44:50,623 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:44:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-02-02 08:44:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 08:44:50,623 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:50,624 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:50,624 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:50,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2009852195, now seen corresponding path program 1 times [2018-02-02 08:44:50,624 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:50,624 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:50,625 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,625 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:50,625 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:50,635 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:50,676 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 08:44:50,676 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:50,676 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 08:44:50,677 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:44:50,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:44:50,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:44:50,677 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 5 states. [2018-02-02 08:44:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:50,715 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-02-02 08:44:50,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:44:50,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-02-02 08:44:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:50,716 INFO L225 Difference]: With dead ends: 44 [2018-02-02 08:44:50,716 INFO L226 Difference]: Without dead ends: 44 [2018-02-02 08:44:50,716 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:44:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-02 08:44:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-02-02 08:44:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-02-02 08:44:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-02-02 08:44:50,718 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 18 [2018-02-02 08:44:50,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:50,718 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-02-02 08:44:50,719 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:44:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-02-02 08:44:50,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 08:44:50,719 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:50,719 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:50,719 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:50,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2009852196, now seen corresponding path program 1 times [2018-02-02 08:44:50,720 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:50,720 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:50,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,721 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:50,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:50,731 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:50,790 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 08:44:50,790 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:50,790 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 08:44:50,790 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 08:44:50,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 08:44:50,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:44:50,791 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 8 states. [2018-02-02 08:44:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:50,877 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-02-02 08:44:50,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:44:50,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-02-02 08:44:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:50,880 INFO L225 Difference]: With dead ends: 59 [2018-02-02 08:44:50,880 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 08:44:50,880 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-02-02 08:44:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 08:44:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2018-02-02 08:44:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 08:44:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2018-02-02 08:44:50,883 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 18 [2018-02-02 08:44:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:50,883 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2018-02-02 08:44:50,883 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 08:44:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2018-02-02 08:44:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 08:44:50,883 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:50,883 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 08:44:50,883 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:50,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1267324412, now seen corresponding path program 1 times [2018-02-02 08:44:50,884 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:50,884 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:50,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,884 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:50,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:50,890 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:50,912 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 08:44:50,912 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:50,913 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:44:50,913 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 08:44:50,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 08:44:50,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:44:50,913 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 6 states. [2018-02-02 08:44:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:50,956 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-02-02 08:44:50,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 08:44:50,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-02 08:44:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:50,957 INFO L225 Difference]: With dead ends: 49 [2018-02-02 08:44:50,957 INFO L226 Difference]: Without dead ends: 49 [2018-02-02 08:44:50,957 INFO L554 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 [2018-02-02 08:44:50,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-02-02 08:44:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-02-02 08:44:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 08:44:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-02-02 08:44:50,960 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 20 [2018-02-02 08:44:50,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:50,961 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-02-02 08:44:50,961 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 08:44:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-02-02 08:44:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 08:44:50,961 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:50,961 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 08:44:50,961 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:50,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1267324411, now seen corresponding path program 1 times [2018-02-02 08:44:50,962 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:50,962 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:50,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,963 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:50,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:50,970 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:51,060 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 08:44:51,061 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:51,061 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 08:44:51,061 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 08:44:51,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 08:44:51,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-02-02 08:44:51,062 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 9 states. [2018-02-02 08:44:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:51,148 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-02-02 08:44:51,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:44:51,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-02 08:44:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:51,149 INFO L225 Difference]: With dead ends: 49 [2018-02-02 08:44:51,149 INFO L226 Difference]: Without dead ends: 49 [2018-02-02 08:44:51,149 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-02-02 08:44:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-02-02 08:44:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-02-02 08:44:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 08:44:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-02-02 08:44:51,151 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 20 [2018-02-02 08:44:51,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:51,151 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-02-02 08:44:51,151 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 08:44:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-02-02 08:44:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 08:44:51,152 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:51,152 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] [2018-02-02 08:44:51,152 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:51,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1871951781, now seen corresponding path program 1 times [2018-02-02 08:44:51,152 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:51,152 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:51,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,153 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:51,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:51,160 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:51,187 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 08:44:51,187 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:51,188 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:44:51,188 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 08:44:51,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 08:44:51,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:44:51,188 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2018-02-02 08:44:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:51,251 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-02-02 08:44:51,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 08:44:51,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-02-02 08:44:51,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:51,252 INFO L225 Difference]: With dead ends: 48 [2018-02-02 08:44:51,252 INFO L226 Difference]: Without dead ends: 48 [2018-02-02 08:44:51,252 INFO L554 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 [2018-02-02 08:44:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-02 08:44:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-02-02 08:44:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-02-02 08:44:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-02-02 08:44:51,257 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 22 [2018-02-02 08:44:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:51,258 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-02-02 08:44:51,258 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 08:44:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-02-02 08:44:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 08:44:51,259 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:51,259 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] [2018-02-02 08:44:51,259 INFO L371 AbstractCegarLoop]: === Iteration 10 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:51,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1871951782, now seen corresponding path program 1 times [2018-02-02 08:44:51,259 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:51,259 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:51,260 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,260 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:51,260 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:51,270 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:51,321 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 08:44:51,321 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:51,321 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 08:44:51,321 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 08:44:51,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 08:44:51,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:44:51,322 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 8 states. [2018-02-02 08:44:51,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:51,395 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2018-02-02 08:44:51,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:44:51,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-02-02 08:44:51,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:51,395 INFO L225 Difference]: With dead ends: 57 [2018-02-02 08:44:51,396 INFO L226 Difference]: Without dead ends: 57 [2018-02-02 08:44:51,396 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-02-02 08:44:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-02-02 08:44:51,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2018-02-02 08:44:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 08:44:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-02-02 08:44:51,398 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 22 [2018-02-02 08:44:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:51,398 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-02-02 08:44:51,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 08:44:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-02-02 08:44:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 08:44:51,398 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:51,398 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] [2018-02-02 08:44:51,398 INFO L371 AbstractCegarLoop]: === Iteration 11 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:51,398 INFO L82 PathProgramCache]: Analyzing trace with hash -645685358, now seen corresponding path program 1 times [2018-02-02 08:44:51,399 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:51,399 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:51,399 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,399 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:51,399 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:51,404 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:51,423 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 08:44:51,423 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:51,423 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:44:51,423 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 08:44:51,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 08:44:51,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:44:51,423 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2018-02-02 08:44:51,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:51,473 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-02-02 08:44:51,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 08:44:51,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-02 08:44:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:51,474 INFO L225 Difference]: With dead ends: 48 [2018-02-02 08:44:51,474 INFO L226 Difference]: Without dead ends: 48 [2018-02-02 08:44:51,475 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:44:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-02 08:44:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-02-02 08:44:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-02-02 08:44:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-02-02 08:44:51,478 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 24 [2018-02-02 08:44:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:51,478 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-02-02 08:44:51,478 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 08:44:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-02-02 08:44:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 08:44:51,479 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:51,479 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] [2018-02-02 08:44:51,479 INFO L371 AbstractCegarLoop]: === Iteration 12 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:51,479 INFO L82 PathProgramCache]: Analyzing trace with hash -645685357, now seen corresponding path program 1 times [2018-02-02 08:44:51,479 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:51,479 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:51,480 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,480 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:51,480 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:51,488 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:51,550 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 08:44:51,550 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:51,550 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 08:44:51,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 08:44:51,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 08:44:51,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-02-02 08:44:51,550 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 9 states. [2018-02-02 08:44:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:51,691 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2018-02-02 08:44:51,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 08:44:51,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-02-02 08:44:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:51,692 INFO L225 Difference]: With dead ends: 57 [2018-02-02 08:44:51,692 INFO L226 Difference]: Without dead ends: 57 [2018-02-02 08:44:51,692 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-02-02 08:44:51,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-02-02 08:44:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2018-02-02 08:44:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 08:44:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-02-02 08:44:51,694 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 24 [2018-02-02 08:44:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:51,695 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-02-02 08:44:51,695 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 08:44:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-02-02 08:44:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 08:44:51,695 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:51,695 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:51,696 INFO L371 AbstractCegarLoop]: === Iteration 13 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1460131898, now seen corresponding path program 1 times [2018-02-02 08:44:51,696 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:51,696 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:51,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,697 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:51,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:51,707 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:51,836 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:51,836 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-02-02 08:44:51,836 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 08:44:51,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 08:44:51,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-02-02 08:44:51,837 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 12 states. [2018-02-02 08:44:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:51,978 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2018-02-02 08:44:51,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 08:44:51,978 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-02-02 08:44:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:51,979 INFO L225 Difference]: With dead ends: 81 [2018-02-02 08:44:51,979 INFO L226 Difference]: Without dead ends: 81 [2018-02-02 08:44:51,979 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2018-02-02 08:44:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-02-02 08:44:51,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2018-02-02 08:44:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-02-02 08:44:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2018-02-02 08:44:51,982 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 25 [2018-02-02 08:44:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:51,982 INFO L432 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2018-02-02 08:44:51,982 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 08:44:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2018-02-02 08:44:51,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 08:44:51,982 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:51,983 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:51,983 INFO L371 AbstractCegarLoop]: === Iteration 14 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:51,983 INFO L82 PathProgramCache]: Analyzing trace with hash -228811844, now seen corresponding path program 1 times [2018-02-02 08:44:51,983 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:51,983 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:51,983 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,983 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:51,983 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:51,989 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:52,205 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:44:52,206 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 08:44:52,225 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:52,257 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:44:52,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 11 treesize of output 8 [2018-02-02 08:44:52,307 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 8 treesize of output 7 [2018-02-02 08:44:52,308 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:52,312 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:52,314 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:52,315 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-02-02 08:44:52,427 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2018-02-02 08:44:52,431 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 22 treesize of output 15 [2018-02-02 08:44:52,432 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:52,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 8 [2018-02-02 08:44:52,442 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:52,451 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 0 case distinctions, treesize of input 18 treesize of output 3 [2018-02-02 08:44:52,451 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:52,455 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:52,467 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:52,467 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2018-02-02 08:44:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:52,502 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 08:44:52,502 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2018-02-02 08:44:52,502 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 08:44:52,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 08:44:52,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-02-02 08:44:52,503 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 22 states. [2018-02-02 08:44:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:53,430 INFO L93 Difference]: Finished difference Result 144 states and 153 transitions. [2018-02-02 08:44:53,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-02-02 08:44:53,431 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2018-02-02 08:44:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:53,432 INFO L225 Difference]: With dead ends: 144 [2018-02-02 08:44:53,432 INFO L226 Difference]: Without dead ends: 144 [2018-02-02 08:44:53,433 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=294, Invalid=2058, Unknown=0, NotChecked=0, Total=2352 [2018-02-02 08:44:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-02-02 08:44:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 79. [2018-02-02 08:44:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-02-02 08:44:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2018-02-02 08:44:53,437 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 25 [2018-02-02 08:44:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:53,437 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2018-02-02 08:44:53,437 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 08:44:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2018-02-02 08:44:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 08:44:53,438 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:53,438 INFO L351 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] [2018-02-02 08:44:53,438 INFO L371 AbstractCegarLoop]: === Iteration 15 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:53,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1662500005, now seen corresponding path program 1 times [2018-02-02 08:44:53,438 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:53,438 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:53,439 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:53,439 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:53,439 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:53,449 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:53,640 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:44:53,640 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 08:44:53,655 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:53,677 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:44:53,683 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 14 treesize of output 11 [2018-02-02 08:44:53,685 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 [2018-02-02 08:44:53,685 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:53,686 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:53,690 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:44:53,690 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-02-02 08:44:53,921 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2018-02-02 08:44:53,927 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 27 treesize of output 25 [2018-02-02 08:44:53,928 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 08:44:53,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 25 [2018-02-02 08:44:53,951 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-02-02 08:44:53,963 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 19 treesize of output 14 [2018-02-02 08:44:53,963 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:53,969 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-02-02 08:44:53,980 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:44:53,980 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:49, output treesize:29 [2018-02-02 08:44:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:54,037 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:44:54,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 22 [2018-02-02 08:44:54,037 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-02-02 08:44:54,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-02-02 08:44:54,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2018-02-02 08:44:54,038 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 23 states. [2018-02-02 08:44:55,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:55,751 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2018-02-02 08:44:55,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-02 08:44:55,752 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27 [2018-02-02 08:44:55,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:55,752 INFO L225 Difference]: With dead ends: 79 [2018-02-02 08:44:55,752 INFO L226 Difference]: Without dead ends: 79 [2018-02-02 08:44:55,753 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=144, Invalid=1045, Unknown=1, NotChecked=0, Total=1190 [2018-02-02 08:44:55,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-02-02 08:44:55,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-02-02 08:44:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-02-02 08:44:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2018-02-02 08:44:55,760 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 27 [2018-02-02 08:44:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:55,760 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2018-02-02 08:44:55,760 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-02-02 08:44:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2018-02-02 08:44:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 08:44:55,761 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:55,761 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:55,761 INFO L371 AbstractCegarLoop]: === Iteration 16 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:55,761 INFO L82 PathProgramCache]: Analyzing trace with hash 65327996, now seen corresponding path program 1 times [2018-02-02 08:44:55,762 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:55,762 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:55,762 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:55,762 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:55,763 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:55,771 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:55,824 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:44:55,824 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:44:55,828 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:55,843 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:44:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:55,867 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:44:55,867 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2018-02-02 08:44:55,867 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-02 08:44:55,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-02 08:44:55,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-02-02 08:44:55,868 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 11 states. [2018-02-02 08:44:55,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:55,977 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2018-02-02 08:44:55,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 08:44:55,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-02-02 08:44:55,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:55,978 INFO L225 Difference]: With dead ends: 84 [2018-02-02 08:44:55,978 INFO L226 Difference]: Without dead ends: 84 [2018-02-02 08:44:55,978 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-02-02 08:44:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-02-02 08:44:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2018-02-02 08:44:55,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-02-02 08:44:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2018-02-02 08:44:55,982 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 29 [2018-02-02 08:44:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:55,982 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2018-02-02 08:44:55,982 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-02 08:44:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2018-02-02 08:44:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 08:44:55,987 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:55,987 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, 1] [2018-02-02 08:44:55,987 INFO L371 AbstractCegarLoop]: === Iteration 17 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:55,987 INFO L82 PathProgramCache]: Analyzing trace with hash -580377695, now seen corresponding path program 1 times [2018-02-02 08:44:55,988 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:55,988 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:55,988 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:55,988 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:55,988 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:56,001 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:56,087 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 08:44:56,087 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:44:56,087 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 08:44:56,087 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 08:44:56,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 08:44:56,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-02-02 08:44:56,087 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 7 states. [2018-02-02 08:44:56,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:56,153 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2018-02-02 08:44:56,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:44:56,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-02-02 08:44:56,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:56,154 INFO L225 Difference]: With dead ends: 74 [2018-02-02 08:44:56,154 INFO L226 Difference]: Without dead ends: 40 [2018-02-02 08:44:56,154 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-02-02 08:44:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-02 08:44:56,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-02-02 08:44:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-02 08:44:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-02-02 08:44:56,155 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2018-02-02 08:44:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:56,155 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-02-02 08:44:56,155 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 08:44:56,155 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-02-02 08:44:56,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 08:44:56,156 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:56,156 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:56,156 INFO L371 AbstractCegarLoop]: === Iteration 18 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1644356119, now seen corresponding path program 1 times [2018-02-02 08:44:56,156 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:56,156 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:56,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:56,157 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:56,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:56,164 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:56,241 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:44:56,241 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:44:56,250 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:56,276 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:44:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:56,337 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 08:44:56,337 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2018-02-02 08:44:56,338 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-02 08:44:56,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-02 08:44:56,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-02-02 08:44:56,338 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 13 states. [2018-02-02 08:44:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:56,469 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-02-02 08:44:56,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 08:44:56,469 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-02-02 08:44:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:56,470 INFO L225 Difference]: With dead ends: 39 [2018-02-02 08:44:56,470 INFO L226 Difference]: Without dead ends: 36 [2018-02-02 08:44:56,470 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2018-02-02 08:44:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-02 08:44:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-02-02 08:44:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-02-02 08:44:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-02-02 08:44:56,471 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 31 [2018-02-02 08:44:56,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:56,471 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-02-02 08:44:56,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-02 08:44:56,471 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-02-02 08:44:56,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-02 08:44:56,472 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:56,472 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:56,472 INFO L371 AbstractCegarLoop]: === Iteration 19 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:56,472 INFO L82 PathProgramCache]: Analyzing trace with hash 566109348, now seen corresponding path program 1 times [2018-02-02 08:44:56,472 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:56,472 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:56,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:56,473 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:56,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:56,483 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:56,738 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:44:56,738 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:44:56,743 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:56,760 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:44:56,762 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 [2018-02-02 08:44:56,763 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,767 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 [2018-02-02 08:44:56,767 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,769 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,769 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-02-02 08:44:56,784 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:44:56,787 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-02-02 08:44:56,787 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,795 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:44:56,796 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:44:56,796 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-02 08:44:56,796 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,799 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,799 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-02-02 08:44:56,825 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-02-02 08:44:56,826 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 12 treesize of output 11 [2018-02-02 08:44:56,826 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,828 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,831 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,831 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-02-02 08:44:56,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 29 [2018-02-02 08:44:56,850 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 13 treesize of output 12 [2018-02-02 08:44:56,850 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,853 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:56,856 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-02-02 08:44:56,856 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2018-02-02 08:44:57,093 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2018-02-02 08:44:57,094 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 10 treesize of output 1 [2018-02-02 08:44:57,095 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:57,101 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 17 treesize of output 14 [2018-02-02 08:44:57,101 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-02-02 08:44:57,103 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:44:57,107 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:44:57,108 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2018-02-02 08:44:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:57,175 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:44:57,176 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2018-02-02 08:44:57,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-02-02 08:44:57,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-02-02 08:44:57,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2018-02-02 08:44:57,176 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 28 states. [2018-02-02 08:44:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:57,847 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-02-02 08:44:57,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-02 08:44:57,847 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 32 [2018-02-02 08:44:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:57,847 INFO L225 Difference]: With dead ends: 36 [2018-02-02 08:44:57,847 INFO L226 Difference]: Without dead ends: 36 [2018-02-02 08:44:57,848 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2018-02-02 08:44:57,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-02 08:44:57,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-02-02 08:44:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-02 08:44:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-02-02 08:44:57,849 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-02-02 08:44:57,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:57,849 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-02-02 08:44:57,849 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-02-02 08:44:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-02-02 08:44:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-02 08:44:57,849 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:44:57,850 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:44:57,850 INFO L371 AbstractCegarLoop]: === Iteration 20 === [cstrcmpErr0RequiresViolation, cstrcmpErr9RequiresViolation, cstrcmpErr4RequiresViolation, cstrcmpErr7RequiresViolation, cstrcmpErr5RequiresViolation, cstrcmpErr6RequiresViolation, cstrcmpErr1RequiresViolation, cstrcmpErr3RequiresViolation, cstrcmpErr2RequiresViolation, cstrcmpErr8RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 08:44:57,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1429764731, now seen corresponding path program 2 times [2018-02-02 08:44:57,850 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:44:57,850 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:44:57,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:57,851 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:44:57,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:44:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:44:57,858 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:44:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:58,081 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:44:58,081 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:44:58,085 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 08:44:58,093 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:44:58,100 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:44:58,103 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:44:58,105 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:44:58,115 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 [2018-02-02 08:44:58,116 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:58,118 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:58,118 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-02 08:44:58,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 13 [2018-02-02 08:44:58,154 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 13 treesize of output 12 [2018-02-02 08:44:58,155 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:58,155 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:44:58,158 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:44:58,158 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-02-02 08:44:58,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2018-02-02 08:44:58,453 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2018-02-02 08:44:58,663 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 08:44:58,676 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 29 treesize of output 27 [2018-02-02 08:44:58,676 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-02-02 08:44:58,686 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 21 treesize of output 16 [2018-02-02 08:44:58,686 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-02-02 08:44:58,694 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-02-02 08:44:58,712 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:44:58,713 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:47, output treesize:37 [2018-02-02 08:44:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:44:58,761 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:44:58,761 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2018-02-02 08:44:58,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-02-02 08:44:58,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-02-02 08:44:58,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2018-02-02 08:44:58,762 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 28 states. [2018-02-02 08:44:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:44:59,387 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-02-02 08:44:59,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 08:44:59,388 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 34 [2018-02-02 08:44:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:44:59,388 INFO L225 Difference]: With dead ends: 35 [2018-02-02 08:44:59,388 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 08:44:59,388 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1574, Unknown=0, NotChecked=0, Total=1806 [2018-02-02 08:44:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 08:44:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 08:44:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 08:44:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 08:44:59,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-02-02 08:44:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:44:59,389 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 08:44:59,389 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-02-02 08:44:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 08:44:59,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 08:44:59,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 08:44:59 BoogieIcfgContainer [2018-02-02 08:44:59,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 08:44:59,393 INFO L168 Benchmark]: Toolchain (without parser) took 10025.75 ms. Allocated memory was 404.8 MB in the beginning and 744.0 MB in the end (delta: 339.2 MB). Free memory was 362.8 MB in the beginning and 442.7 MB in the end (delta: -79.9 MB). Peak memory consumption was 259.3 MB. Max. memory is 5.3 GB. [2018-02-02 08:44:59,394 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 404.8 MB. Free memory is still 368.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 08:44:59,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.01 ms. Allocated memory is still 404.8 MB. Free memory was 361.4 MB in the beginning and 350.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 08:44:59,394 INFO L168 Benchmark]: Boogie Preprocessor took 27.90 ms. Allocated memory is still 404.8 MB. Free memory was 350.9 MB in the beginning and 349.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 08:44:59,394 INFO L168 Benchmark]: RCFGBuilder took 208.83 ms. Allocated memory is still 404.8 MB. Free memory was 349.5 MB in the beginning and 329.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 5.3 GB. [2018-02-02 08:44:59,394 INFO L168 Benchmark]: TraceAbstraction took 9630.39 ms. Allocated memory was 404.8 MB in the beginning and 744.0 MB in the end (delta: 339.2 MB). Free memory was 329.7 MB in the beginning and 442.7 MB in the end (delta: -113.0 MB). Peak memory consumption was 226.2 MB. Max. memory is 5.3 GB. [2018-02-02 08:44:59,395 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 404.8 MB. Free memory is still 368.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 156.01 ms. Allocated memory is still 404.8 MB. Free memory was 361.4 MB in the beginning and 350.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.90 ms. Allocated memory is still 404.8 MB. Free memory was 350.9 MB in the beginning and 349.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 208.83 ms. Allocated memory is still 404.8 MB. Free memory was 349.5 MB in the beginning and 329.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 9630.39 ms. Allocated memory was 404.8 MB in the beginning and 744.0 MB in the end (delta: 339.2 MB). Free memory was 329.7 MB in the beginning and 442.7 MB in the end (delta: -113.0 MB). Peak memory consumption was 226.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 15 error locations. SAFE Result, 9.5s OverallTime, 20 OverallIterations, 3 TraceHistogramMax, 5.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 643 SDtfs, 1091 SDslu, 2643 SDs, 0 SdLazy, 2803 SolverSat, 227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 156 SyntacticMatches, 5 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 108 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 634 NumberOfCodeBlocks, 634 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 608 ConstructedInterpolants, 40 QuantifiedInterpolants, 132084 SizeOfPredicates, 52 NumberOfNonLiveVariables, 933 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 26 InterpolantComputations, 16 PerfectInterpolantSequences, 27/88 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_08-44-59-400.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_08-44-59-400.csv Received shutdown request...