java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:49:42,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:49:42,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:49:42,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:49:42,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:49:42,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:49:42,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:49:42,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:49:42,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:49:42,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:49:42,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:49:42,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:49:42,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:49:42,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:49:42,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:49:42,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:49:42,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:49:42,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:49:42,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:49:42,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:49:42,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:49:42,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:49:42,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:49:42,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:49:42,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:49:42,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:49:42,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:49:42,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:49:42,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:49:42,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:49:42,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:49:42,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:49:42,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:49:42,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:49:42,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:49:42,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:49:42,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:49:42,313 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:49:42,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:49:42,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:49:42,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:49:42,314 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:49:42,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:49:42,315 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:49:42,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:49:42,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:49:42,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:49:42,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:49:42,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:49:42,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:49:42,318 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:49:42,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:49:42,318 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:49:42,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:49:42,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:49:42,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:49:42,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:49:42,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:49:42,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:49:42,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:49:42,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:49:42,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:49:42,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:49:42,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:49:42,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:49:42,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:49:42,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:49:42,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:49:42,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:49:42,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:49:42,628 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:49:42,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2019-10-14 23:49:42,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1720d9bb3/57e06a6d18484119a5084e3e3065e4d1/FLAGcbc38ab5c [2019-10-14 23:49:43,126 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:49:43,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2019-10-14 23:49:43,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1720d9bb3/57e06a6d18484119a5084e3e3065e4d1/FLAGcbc38ab5c [2019-10-14 23:49:43,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1720d9bb3/57e06a6d18484119a5084e3e3065e4d1 [2019-10-14 23:49:43,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:49:43,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:49:43,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:43,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:49:43,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:49:43,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f33695a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43, skipping insertion in model container [2019-10-14 23:49:43,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,541 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:49:43,568 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:49:43,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:43,793 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:49:43,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:43,826 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:49:43,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43 WrapperNode [2019-10-14 23:49:43,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:43,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:49:43,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:49:43,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:49:43,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (1/1) ... [2019-10-14 23:49:43,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:49:43,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:49:43,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:49:43,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:49:43,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (1/1) ... No working directory specified, using /storage/repos/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 [2019-10-14 23:49:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:49:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:49:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:49:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:49:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:49:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:49:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-14 23:49:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:49:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:49:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:49:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:49:44,206 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:49:44,211 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:49:44,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:44 BoogieIcfgContainer [2019-10-14 23:49:44,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:49:44,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:49:44,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:49:44,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:49:44,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:49:43" (1/3) ... [2019-10-14 23:49:44,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a4c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:44, skipping insertion in model container [2019-10-14 23:49:44,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:43" (2/3) ... [2019-10-14 23:49:44,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a4c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:44, skipping insertion in model container [2019-10-14 23:49:44,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:44" (3/3) ... [2019-10-14 23:49:44,237 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2019-10-14 23:49:44,263 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:49:44,281 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:49:44,293 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:49:44,318 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:49:44,318 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:49:44,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:49:44,318 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:49:44,318 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:49:44,319 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:49:44,319 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:49:44,319 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:49:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-14 23:49:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-14 23:49:44,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:44,349 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:44,350 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2019-10-14 23:49:44,372 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:44,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764736026] [2019-10-14 23:49:44,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:44,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:44,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:49:44,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764736026] [2019-10-14 23:49:44,496 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:44,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:49:44,497 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333385427] [2019-10-14 23:49:44,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:49:44,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:44,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:49:44,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:44,518 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2019-10-14 23:49:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:44,604 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2019-10-14 23:49:44,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:49:44,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-10-14 23:49:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:44,615 INFO L225 Difference]: With dead ends: 70 [2019-10-14 23:49:44,616 INFO L226 Difference]: Without dead ends: 39 [2019-10-14 23:49:44,619 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-14 23:49:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-14 23:49:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-14 23:49:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2019-10-14 23:49:44,660 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2019-10-14 23:49:44,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:44,660 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2019-10-14 23:49:44,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:49:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2019-10-14 23:49:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:49:44,662 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:44,662 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:44,663 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:44,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:44,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2019-10-14 23:49:44,663 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:44,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166125584] [2019-10-14 23:49:44,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:44,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:44,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:49:44,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166125584] [2019-10-14 23:49:44,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:44,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:49:44,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173205651] [2019-10-14 23:49:44,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:49:44,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:44,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:49:44,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:44,697 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2019-10-14 23:49:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:44,773 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2019-10-14 23:49:44,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:49:44,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-14 23:49:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:44,775 INFO L225 Difference]: With dead ends: 87 [2019-10-14 23:49:44,776 INFO L226 Difference]: Without dead ends: 53 [2019-10-14 23:49:44,777 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-14 23:49:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2019-10-14 23:49:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-10-14 23:49:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2019-10-14 23:49:44,788 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 13 [2019-10-14 23:49:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:44,788 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2019-10-14 23:49:44,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:49:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2019-10-14 23:49:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:49:44,790 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:44,790 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:44,790 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:44,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1966887380, now seen corresponding path program 1 times [2019-10-14 23:49:44,791 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:44,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788425162] [2019-10-14 23:49:44,792 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:44,792 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:44,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:49:44,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788425162] [2019-10-14 23:49:44,822 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:44,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:49:44,822 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726032941] [2019-10-14 23:49:44,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:49:44,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:44,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:49:44,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:44,824 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand 3 states. [2019-10-14 23:49:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:44,888 INFO L93 Difference]: Finished difference Result 93 states and 130 transitions. [2019-10-14 23:49:44,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:49:44,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-14 23:49:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:44,890 INFO L225 Difference]: With dead ends: 93 [2019-10-14 23:49:44,891 INFO L226 Difference]: Without dead ends: 70 [2019-10-14 23:49:44,891 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:44,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-14 23:49:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-10-14 23:49:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-14 23:49:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2019-10-14 23:49:44,904 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 13 [2019-10-14 23:49:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:44,905 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2019-10-14 23:49:44,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:49:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2019-10-14 23:49:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:49:44,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:44,907 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:44,907 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:44,907 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2019-10-14 23:49:44,908 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:44,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468450897] [2019-10-14 23:49:44,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:44,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:44,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:49:44,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468450897] [2019-10-14 23:49:44,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:44,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:49:44,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141081550] [2019-10-14 23:49:44,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:49:44,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:44,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:49:44,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:44,964 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand 3 states. [2019-10-14 23:49:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:45,019 INFO L93 Difference]: Finished difference Result 137 states and 187 transitions. [2019-10-14 23:49:45,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:49:45,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-14 23:49:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:45,021 INFO L225 Difference]: With dead ends: 137 [2019-10-14 23:49:45,021 INFO L226 Difference]: Without dead ends: 93 [2019-10-14 23:49:45,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-10-14 23:49:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2019-10-14 23:49:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-14 23:49:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 123 transitions. [2019-10-14 23:49:45,036 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 123 transitions. Word has length 20 [2019-10-14 23:49:45,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:45,036 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 123 transitions. [2019-10-14 23:49:45,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:49:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 123 transitions. [2019-10-14 23:49:45,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-14 23:49:45,037 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:45,038 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:45,038 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:45,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:45,038 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2019-10-14 23:49:45,039 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:45,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43829169] [2019-10-14 23:49:45,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:45,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:45,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:49:45,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43829169] [2019-10-14 23:49:45,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:45,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:49:45,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987507449] [2019-10-14 23:49:45,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:49:45,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:45,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:49:45,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:45,098 INFO L87 Difference]: Start difference. First operand 91 states and 123 transitions. Second operand 3 states. [2019-10-14 23:49:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:45,147 INFO L93 Difference]: Finished difference Result 181 states and 245 transitions. [2019-10-14 23:49:45,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:49:45,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-14 23:49:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:45,149 INFO L225 Difference]: With dead ends: 181 [2019-10-14 23:49:45,150 INFO L226 Difference]: Without dead ends: 76 [2019-10-14 23:49:45,151 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-14 23:49:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2019-10-14 23:49:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-14 23:49:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2019-10-14 23:49:45,162 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 23 [2019-10-14 23:49:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:45,163 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2019-10-14 23:49:45,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:49:45,163 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2019-10-14 23:49:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-14 23:49:45,164 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:45,165 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:45,165 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:45,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2019-10-14 23:49:45,166 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:45,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887032742] [2019-10-14 23:49:45,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:45,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:45,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:49:45,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887032742] [2019-10-14 23:49:45,207 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:45,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:49:45,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745085430] [2019-10-14 23:49:45,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:49:45,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:45,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:49:45,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:45,210 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand 3 states. [2019-10-14 23:49:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:45,227 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2019-10-14 23:49:45,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:49:45,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-10-14 23:49:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:45,229 INFO L225 Difference]: With dead ends: 124 [2019-10-14 23:49:45,229 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:49:45,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:49:45,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:49:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:49:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:49:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:49:45,231 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-10-14 23:49:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:45,232 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:49:45,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:49:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:49:45,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:49:45,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:49:45,409 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:49:45,409 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:49:45,409 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:49:45,409 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:49:45,409 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:49:45,410 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:49:45,410 INFO L439 ceAbstractionStarter]: At program point L97(lines 9 141) the Hoare annotation is: false [2019-10-14 23:49:45,410 INFO L439 ceAbstractionStarter]: At program point L31(lines 30 125) the Hoare annotation is: (<= main_~blastFlag~0 2) [2019-10-14 23:49:45,410 INFO L443 ceAbstractionStarter]: For program point L93-1(lines 54 107) no Hoare annotation was computed. [2019-10-14 23:49:45,410 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 141) no Hoare annotation was computed. [2019-10-14 23:49:45,411 INFO L443 ceAbstractionStarter]: For program point L89-1(lines 54 107) no Hoare annotation was computed. [2019-10-14 23:49:45,411 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-14 23:49:45,411 INFO L443 ceAbstractionStarter]: For program point L78-1(lines 54 107) no Hoare annotation was computed. [2019-10-14 23:49:45,411 INFO L443 ceAbstractionStarter]: For program point L70(lines 70 74) no Hoare annotation was computed. [2019-10-14 23:49:45,411 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 139) no Hoare annotation was computed. [2019-10-14 23:49:45,411 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 128) no Hoare annotation was computed. [2019-10-14 23:49:45,411 INFO L443 ceAbstractionStarter]: For program point L58-1(lines 54 107) no Hoare annotation was computed. [2019-10-14 23:49:45,412 INFO L443 ceAbstractionStarter]: For program point L50(lines 50 109) no Hoare annotation was computed. [2019-10-14 23:49:45,412 INFO L443 ceAbstractionStarter]: For program point L46(lines 46 111) no Hoare annotation was computed. [2019-10-14 23:49:45,412 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 141) no Hoare annotation was computed. [2019-10-14 23:49:45,412 INFO L446 ceAbstractionStarter]: At program point L137(lines 9 141) the Hoare annotation is: true [2019-10-14 23:49:45,412 INFO L439 ceAbstractionStarter]: At program point L100(lines 18 135) the Hoare annotation is: (or (and (<= 8640 main_~s__state~0) (<= main_~blastFlag~0 3) (not (= 0 main_~s__hit~0))) (<= main_~blastFlag~0 2)) [2019-10-14 23:49:45,412 INFO L443 ceAbstractionStarter]: For program point L96(lines 96 98) no Hoare annotation was computed. [2019-10-14 23:49:45,413 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 125) no Hoare annotation was computed. [2019-10-14 23:49:45,413 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 141) the Hoare annotation is: true [2019-10-14 23:49:45,413 INFO L439 ceAbstractionStarter]: At program point L26(lines 25 128) the Hoare annotation is: (<= main_~blastFlag~0 2) [2019-10-14 23:49:45,413 INFO L439 ceAbstractionStarter]: At program point L51(lines 50 109) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 2)) (and .cse0 (<= main_~blastFlag~0 3) (not (= 0 main_~s__hit~0))))) [2019-10-14 23:49:45,414 INFO L439 ceAbstractionStarter]: At program point L47(lines 46 111) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 3) (not (= 0 main_~s__hit~0))) (and .cse0 (<= main_~blastFlag~0 2)))) [2019-10-14 23:49:45,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:49:45 BoogieIcfgContainer [2019-10-14 23:49:45,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:49:45,440 INFO L168 Benchmark]: Toolchain (without parser) took 1913.27 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 102.9 MB in the beginning and 190.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:49:45,442 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:49:45,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.34 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 92.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:49:45,449 INFO L168 Benchmark]: Boogie Preprocessor took 118.37 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 179.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:49:45,450 INFO L168 Benchmark]: RCFGBuilder took 270.34 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 164.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:49:45,451 INFO L168 Benchmark]: TraceAbstraction took 1219.70 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 164.9 MB in the beginning and 190.6 MB in the end (delta: -25.6 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:49:45,463 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.34 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 92.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.37 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 179.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.34 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 164.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1219.70 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 164.9 MB in the beginning and 190.6 MB in the end (delta: -25.6 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 139]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (8656 <= s__state && blastFlag <= 2) || ((8656 <= s__state && blastFlag <= 3) && !(0 == s__hit)) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag <= 3) && !(0 == s__hit)) || blastFlag <= 2 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag <= 3) && !(0 == s__hit)) || (8640 <= s__state && blastFlag <= 2) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: blastFlag <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 184 SDtfs, 92 SDslu, 109 SDs, 0 SdLazy, 95 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 34 NumberOfFragments, 65 HoareAnnotationTreeSize, 11 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...