/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:19:18,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:19:18,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:19:18,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:19:18,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:19:18,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:19:18,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:19:18,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:19:18,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:19:18,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:19:18,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:19:18,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:19:18,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:19:18,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:19:18,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:19:18,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:19:18,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:19:18,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:19:18,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:19:18,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:19:18,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:19:18,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:19:18,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:19:18,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:19:18,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 13:19:18,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:19:18,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:19:18,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:19:18,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:19:19,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:19:19,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:19:19,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:19:19,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:19:19,032 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:19:19,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:19:19,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:19:19,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:19:19,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:19:19,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:19:19,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:19:19,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:19:19,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:19:19,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:19:19,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:19:19,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:19:19,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:19:19,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:19:19,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:19:19,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:19:19,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:19:19,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:19:19,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:19:19,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:19:19,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:19:19,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:19:19,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:19:19,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:19:19,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:19:19,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:19:19,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:19:19,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:19:19,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:19:19,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:19:19,378 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:19:19,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-08-21 13:19:19,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0718cc9e2/926763e9421d409291464f5325a069ed/FLAG7b6f36327 [2020-08-21 13:19:19,972 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:19:19,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-08-21 13:19:19,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0718cc9e2/926763e9421d409291464f5325a069ed/FLAG7b6f36327 [2020-08-21 13:19:20,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0718cc9e2/926763e9421d409291464f5325a069ed [2020-08-21 13:19:20,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:19:20,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:19:20,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:19:20,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:19:20,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:19:20,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66abf011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20, skipping insertion in model container [2020-08-21 13:19:20,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:19:20,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:19:20,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:19:20,584 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:19:20,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:19:20,721 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:19:20,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20 WrapperNode [2020-08-21 13:19:20,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:19:20,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:19:20,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:19:20,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:19:20,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (1/1) ... [2020-08-21 13:19:20,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:19:20,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:19:20,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:19:20,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:19:20,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 13:19:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:19:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:19:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:19:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:19:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 13:19:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:19:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-21 13:19:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:19:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:19:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:19:21,145 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:19:21,145 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 13:19:21,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:19:21 BoogieIcfgContainer [2020-08-21 13:19:21,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:19:21,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:19:21,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:19:21,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:19:21,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:19:20" (1/3) ... [2020-08-21 13:19:21,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b8e703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:19:21, skipping insertion in model container [2020-08-21 13:19:21,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:20" (2/3) ... [2020-08-21 13:19:21,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b8e703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:19:21, skipping insertion in model container [2020-08-21 13:19:21,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:19:21" (3/3) ... [2020-08-21 13:19:21,163 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-08-21 13:19:21,178 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:19:21,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:19:21,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:19:21,235 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:19:21,244 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:19:21,244 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:19:21,245 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:19:21,245 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:19:21,245 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:19:21,245 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:19:21,245 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:19:21,267 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-08-21 13:19:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-21 13:19:21,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:21,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:21,276 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:21,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2008919768, now seen corresponding path program 1 times [2020-08-21 13:19:21,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:21,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230010572] [2020-08-21 13:19:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:21,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:21,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230010572] [2020-08-21 13:19:21,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:21,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:19:21,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145971495] [2020-08-21 13:19:21,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:19:21,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:21,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:19:21,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:19:21,507 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-08-21 13:19:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:21,617 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2020-08-21 13:19:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:19:21,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-08-21 13:19:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:21,631 INFO L225 Difference]: With dead ends: 136 [2020-08-21 13:19:21,631 INFO L226 Difference]: Without dead ends: 83 [2020-08-21 13:19:21,635 INFO L675 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 [2020-08-21 13:19:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-21 13:19:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-21 13:19:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-21 13:19:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2020-08-21 13:19:21,682 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 8 [2020-08-21 13:19:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:21,682 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2020-08-21 13:19:21,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:19:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2020-08-21 13:19:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 13:19:21,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:21,684 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:21,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:19:21,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:21,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2066454160, now seen corresponding path program 1 times [2020-08-21 13:19:21,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:21,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395119865] [2020-08-21 13:19:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:21,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395119865] [2020-08-21 13:19:21,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:21,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:19:21,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752184523] [2020-08-21 13:19:21,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:19:21,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:21,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:19:21,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:19:21,731 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand 3 states. [2020-08-21 13:19:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:21,826 INFO L93 Difference]: Finished difference Result 161 states and 253 transitions. [2020-08-21 13:19:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:19:21,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-21 13:19:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:21,830 INFO L225 Difference]: With dead ends: 161 [2020-08-21 13:19:21,830 INFO L226 Difference]: Without dead ends: 121 [2020-08-21 13:19:21,832 INFO L675 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 [2020-08-21 13:19:21,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-08-21 13:19:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-08-21 13:19:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 13:19:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2020-08-21 13:19:21,858 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 13 [2020-08-21 13:19:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:21,858 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2020-08-21 13:19:21,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:19:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2020-08-21 13:19:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 13:19:21,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:21,861 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:21,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:19:21,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:21,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1216248382, now seen corresponding path program 1 times [2020-08-21 13:19:21,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:21,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153316415] [2020-08-21 13:19:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:19:21,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153316415] [2020-08-21 13:19:21,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:21,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:19:21,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741821012] [2020-08-21 13:19:21,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:19:21,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:21,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:19:21,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:19:21,916 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand 3 states. [2020-08-21 13:19:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:22,069 INFO L93 Difference]: Finished difference Result 281 states and 440 transitions. [2020-08-21 13:19:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:19:22,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 13:19:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:22,072 INFO L225 Difference]: With dead ends: 281 [2020-08-21 13:19:22,072 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 13:19:22,074 INFO L675 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 [2020-08-21 13:19:22,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 13:19:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-08-21 13:19:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 13:19:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 220 transitions. [2020-08-21 13:19:22,095 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 220 transitions. Word has length 19 [2020-08-21 13:19:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:22,096 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 220 transitions. [2020-08-21 13:19:22,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:19:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 220 transitions. [2020-08-21 13:19:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 13:19:22,098 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:22,098 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:22,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:19:22,099 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:22,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:22,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1216188800, now seen corresponding path program 1 times [2020-08-21 13:19:22,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:22,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148994175] [2020-08-21 13:19:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:19:22,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148994175] [2020-08-21 13:19:22,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:22,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:19:22,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747632147] [2020-08-21 13:19:22,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:19:22,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:19:22,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:19:22,142 INFO L87 Difference]: Start difference. First operand 157 states and 220 transitions. Second operand 3 states. [2020-08-21 13:19:22,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:22,205 INFO L93 Difference]: Finished difference Result 309 states and 441 transitions. [2020-08-21 13:19:22,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:19:22,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 13:19:22,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:22,208 INFO L225 Difference]: With dead ends: 309 [2020-08-21 13:19:22,208 INFO L226 Difference]: Without dead ends: 207 [2020-08-21 13:19:22,210 INFO L675 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 [2020-08-21 13:19:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-21 13:19:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-08-21 13:19:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-08-21 13:19:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 291 transitions. [2020-08-21 13:19:22,254 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 291 transitions. Word has length 19 [2020-08-21 13:19:22,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:22,254 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 291 transitions. [2020-08-21 13:19:22,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:19:22,255 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 291 transitions. [2020-08-21 13:19:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 13:19:22,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:22,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:22,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:19:22,258 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:22,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1694730092, now seen corresponding path program 1 times [2020-08-21 13:19:22,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:22,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180983228] [2020-08-21 13:19:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:22,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-21 13:19:22,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180983228] [2020-08-21 13:19:22,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:22,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:19:22,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967861096] [2020-08-21 13:19:22,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:19:22,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:22,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:19:22,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:19:22,325 INFO L87 Difference]: Start difference. First operand 207 states and 291 transitions. Second operand 3 states. [2020-08-21 13:19:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:22,383 INFO L93 Difference]: Finished difference Result 411 states and 584 transitions. [2020-08-21 13:19:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:19:22,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-08-21 13:19:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:22,386 INFO L225 Difference]: With dead ends: 411 [2020-08-21 13:19:22,387 INFO L226 Difference]: Without dead ends: 259 [2020-08-21 13:19:22,388 INFO L675 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 [2020-08-21 13:19:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-21 13:19:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-08-21 13:19:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-21 13:19:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 364 transitions. [2020-08-21 13:19:22,408 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 364 transitions. Word has length 48 [2020-08-21 13:19:22,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:22,408 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 364 transitions. [2020-08-21 13:19:22,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:19:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 364 transitions. [2020-08-21 13:19:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:19:22,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:22,412 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:22,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:19:22,412 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:22,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:22,413 INFO L82 PathProgramCache]: Analyzing trace with hash 365198397, now seen corresponding path program 1 times [2020-08-21 13:19:22,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:22,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041357072] [2020-08-21 13:19:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 13:19:22,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041357072] [2020-08-21 13:19:22,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:22,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:19:22,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030576915] [2020-08-21 13:19:22,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:19:22,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:22,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:19:22,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:19:22,500 INFO L87 Difference]: Start difference. First operand 257 states and 364 transitions. Second operand 3 states. [2020-08-21 13:19:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:22,624 INFO L93 Difference]: Finished difference Result 517 states and 746 transitions. [2020-08-21 13:19:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:19:22,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-08-21 13:19:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:22,627 INFO L225 Difference]: With dead ends: 517 [2020-08-21 13:19:22,628 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 13:19:22,629 INFO L675 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 [2020-08-21 13:19:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 13:19:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2020-08-21 13:19:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-21 13:19:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 245 transitions. [2020-08-21 13:19:22,640 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 245 transitions. Word has length 51 [2020-08-21 13:19:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:22,641 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 245 transitions. [2020-08-21 13:19:22,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:19:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 245 transitions. [2020-08-21 13:19:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:19:22,645 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:22,645 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:22,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:19:22,646 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:22,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:22,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1939547864, now seen corresponding path program 1 times [2020-08-21 13:19:22,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:22,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862842891] [2020-08-21 13:19:22,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:22,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-21 13:19:22,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862842891] [2020-08-21 13:19:22,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:22,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:19:22,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426686152] [2020-08-21 13:19:22,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:19:22,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:22,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:19:22,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:19:22,742 INFO L87 Difference]: Start difference. First operand 186 states and 245 transitions. Second operand 3 states. [2020-08-21 13:19:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:22,758 INFO L93 Difference]: Finished difference Result 305 states and 376 transitions. [2020-08-21 13:19:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:19:22,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-08-21 13:19:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:22,760 INFO L225 Difference]: With dead ends: 305 [2020-08-21 13:19:22,760 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:19:22,762 INFO L675 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 [2020-08-21 13:19:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:19:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:19:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:19:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:19:22,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2020-08-21 13:19:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:22,764 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:19:22,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:19:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:19:22,764 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:19:22,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:19:22,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 13:19:23,024 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 13:19:23,024 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 13:19:23,024 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 13:19:23,025 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 13:19:23,025 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 13:19:23,025 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 13:19:23,025 INFO L268 CegarLoopResult]: For program point L60(lines 60 189) no Hoare annotation was computed. [2020-08-21 13:19:23,025 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 217) no Hoare annotation was computed. [2020-08-21 13:19:23,026 INFO L268 CegarLoopResult]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2020-08-21 13:19:23,026 INFO L268 CegarLoopResult]: For program point L52(lines 52 193) no Hoare annotation was computed. [2020-08-21 13:19:23,026 INFO L268 CegarLoopResult]: For program point L85-1(lines 74 183) no Hoare annotation was computed. [2020-08-21 13:19:23,026 INFO L264 CegarLoopResult]: At program point L176(lines 22 211) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-21 13:19:23,026 INFO L268 CegarLoopResult]: For program point L44(lines 44 197) no Hoare annotation was computed. [2020-08-21 13:19:23,027 INFO L268 CegarLoopResult]: For program point L135(lines 135 139) no Hoare annotation was computed. [2020-08-21 13:19:23,027 INFO L264 CegarLoopResult]: At program point L69(lines 68 185) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-21 13:19:23,027 INFO L268 CegarLoopResult]: For program point L36(lines 36 201) no Hoare annotation was computed. [2020-08-21 13:19:23,027 INFO L264 CegarLoopResult]: At program point L61(lines 60 189) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,028 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,029 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,029 INFO L268 CegarLoopResult]: For program point L78-1(lines 78 80) no Hoare annotation was computed. [2020-08-21 13:19:23,030 INFO L268 CegarLoopResult]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2020-08-21 13:19:23,030 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,030 INFO L268 CegarLoopResult]: For program point L29(lines 29 204) no Hoare annotation was computed. [2020-08-21 13:19:23,031 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,031 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,031 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 217) no Hoare annotation was computed. [2020-08-21 13:19:23,032 INFO L268 CegarLoopResult]: For program point L162-1(lines 162 164) no Hoare annotation was computed. [2020-08-21 13:19:23,032 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-08-21 13:19:23,032 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,032 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-08-21 13:19:23,033 INFO L268 CegarLoopResult]: For program point L105(lines 105 123) no Hoare annotation was computed. [2020-08-21 13:19:23,033 INFO L268 CegarLoopResult]: For program point L72(lines 72 183) no Hoare annotation was computed. [2020-08-21 13:19:23,033 INFO L268 CegarLoopResult]: For program point L64(lines 64 187) no Hoare annotation was computed. [2020-08-21 13:19:23,033 INFO L268 CegarLoopResult]: For program point L56(lines 56 191) no Hoare annotation was computed. [2020-08-21 13:19:23,033 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-21 13:19:23,033 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-08-21 13:19:23,034 INFO L268 CegarLoopResult]: For program point L114(lines 114 118) no Hoare annotation was computed. [2020-08-21 13:19:23,034 INFO L268 CegarLoopResult]: For program point L48(lines 48 195) no Hoare annotation was computed. [2020-08-21 13:19:23,034 INFO L268 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-08-21 13:19:23,034 INFO L268 CegarLoopResult]: For program point L106(lines 106 110) no Hoare annotation was computed. [2020-08-21 13:19:23,034 INFO L264 CegarLoopResult]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-21 13:19:23,035 INFO L268 CegarLoopResult]: For program point L40(lines 40 199) no Hoare annotation was computed. [2020-08-21 13:19:23,036 INFO L264 CegarLoopResult]: At program point L65(lines 64 187) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 2)) (and .cse0 (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0))))) [2020-08-21 13:19:23,036 INFO L268 CegarLoopResult]: For program point L32(lines 32 203) no Hoare annotation was computed. [2020-08-21 13:19:23,036 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,037 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,037 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-08-21 13:19:23,037 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,037 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 13:19:23,037 INFO L268 CegarLoopResult]: For program point L68(lines 68 185) no Hoare annotation was computed. [2020-08-21 13:19:23,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:19:23 BoogieIcfgContainer [2020-08-21 13:19:23,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:19:23,073 INFO L168 Benchmark]: Toolchain (without parser) took 2738.85 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.0 MB in the beginning and 109.1 MB in the end (delta: -7.1 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:23,080 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-21 13:19:23,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.14 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 181.6 MB in the end (delta: -79.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:23,082 INFO L168 Benchmark]: Boogie Preprocessor took 46.16 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:23,083 INFO L168 Benchmark]: RCFGBuilder took 383.19 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 160.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:23,084 INFO L168 Benchmark]: TraceAbstraction took 1913.89 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 159.4 MB in the beginning and 109.1 MB in the end (delta: 50.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:23,095 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.14 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 181.6 MB in the end (delta: -79.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.16 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.19 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 160.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1913.89 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 159.4 MB in the beginning and 109.1 MB in the end (delta: 50.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 215]: 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: 32]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (8640 <= s__state && blastFlag <= 2) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0)) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: blastFlag <= 3 && 8656 <= s__state - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((blastFlag <= 3 && 8656 <= s__state) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0))) || blastFlag <= 2 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: blastFlag <= 3 && 8656 <= s__state - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: blastFlag <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 460 SDtfs, 252 SDslu, 319 SDs, 0 SdLazy, 194 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 87 NumberOfFragments, 94 HoareAnnotationTreeSize, 21 FomulaSimplifications, 622 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 24476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 193/193 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...