/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -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 0.1.25-5644d1e-m [2020-08-19 02:46:28,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:46:28,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:46:28,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:46:28,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:46:28,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:46:28,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:46:28,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:46:28,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:46:28,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:46:28,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:46:28,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:46:28,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:46:28,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:46:28,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:46:28,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:46:28,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:46:28,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:46:28,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:46:28,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:46:28,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:46:28,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:46:28,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:46:28,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:46:28,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:46:28,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:46:28,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:46:28,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:46:28,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:46:28,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:46:28,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:46:28,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:46:28,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:46:28,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:46:28,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:46:28,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:46:28,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:46:28,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:46:28,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:46:28,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:46:28,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:46:28,214 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 [2020-08-19 02:46:28,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:46:28,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:46:28,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:46:28,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:46:28,239 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:46:28,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:46:28,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:46:28,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:46:28,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:46:28,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:46:28,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:46:28,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:46:28,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:46:28,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:46:28,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:46:28,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:46:28,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:46:28,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:46:28,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:46:28,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:46:28,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:46:28,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:46:28,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:46:28,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:46:28,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:46:28,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:46:28,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:46:28,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:46:28,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:46:28,244 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:46:28,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:46:28,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:46:28,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:46:28,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:46:28,633 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:46:28,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-08-19 02:46:28,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7567163b/b54f9f8c295948529750aee1b1c7c98d/FLAGa186c5fae [2020-08-19 02:46:29,157 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:46:29,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-08-19 02:46:29,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7567163b/b54f9f8c295948529750aee1b1c7c98d/FLAGa186c5fae [2020-08-19 02:46:29,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7567163b/b54f9f8c295948529750aee1b1c7c98d [2020-08-19 02:46:29,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:46:29,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:46:29,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:46:29,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:46:29,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:46:29,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:29,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2f0c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29, skipping insertion in model container [2020-08-19 02:46:29,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:29,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:46:29,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:46:29,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:46:29,841 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:46:29,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:46:29,878 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:46:29,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29 WrapperNode [2020-08-19 02:46:29,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:46:29,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:46:29,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:46:29,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:46:29,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:29,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:29,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:29,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:29,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:30,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:30,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (1/1) ... [2020-08-19 02:46:30,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:46:30,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:46:30,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:46:30,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:46:30,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (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 [2020-08-19 02:46:30,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:46:30,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:46:30,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:46:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:46:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 02:46:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:46:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 02:46:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:46:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:46:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:46:30,396 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:46:30,397 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:46:30,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:46:30 BoogieIcfgContainer [2020-08-19 02:46:30,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:46:30,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:46:30,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:46:30,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:46:30,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:46:29" (1/3) ... [2020-08-19 02:46:30,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a24ba23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:46:30, skipping insertion in model container [2020-08-19 02:46:30,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:29" (2/3) ... [2020-08-19 02:46:30,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a24ba23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:46:30, skipping insertion in model container [2020-08-19 02:46:30,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:46:30" (3/3) ... [2020-08-19 02:46:30,412 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-08-19 02:46:30,426 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:46:30,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:46:30,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:46:30,480 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:46:30,480 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:46:30,480 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:46:30,480 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:46:30,481 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:46:30,481 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:46:30,481 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:46:30,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:46:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-08-19 02:46:30,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-19 02:46:30,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:30,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:30,538 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:30,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:30,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2008919768, now seen corresponding path program 1 times [2020-08-19 02:46:30,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:30,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591240702] [2020-08-19 02:46:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:30,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591240702] [2020-08-19 02:46:30,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:30,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:30,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358862270] [2020-08-19 02:46:30,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:30,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:30,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:30,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:30,716 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-08-19 02:46:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:30,848 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2020-08-19 02:46:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:30,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-08-19 02:46:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:30,863 INFO L225 Difference]: With dead ends: 136 [2020-08-19 02:46:30,864 INFO L226 Difference]: Without dead ends: 83 [2020-08-19 02:46:30,868 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 [2020-08-19 02:46:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-19 02:46:30,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-19 02:46:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-19 02:46:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2020-08-19 02:46:30,926 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 8 [2020-08-19 02:46:30,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:30,926 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2020-08-19 02:46:30,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2020-08-19 02:46:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 02:46:30,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:30,928 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:30,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:46:30,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:30,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:30,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2066454160, now seen corresponding path program 1 times [2020-08-19 02:46:30,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:30,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899581482] [2020-08-19 02:46:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:30,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899581482] [2020-08-19 02:46:30,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:30,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:30,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657506723] [2020-08-19 02:46:30,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:30,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:30,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:30,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:30,988 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand 3 states. [2020-08-19 02:46:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:31,074 INFO L93 Difference]: Finished difference Result 161 states and 253 transitions. [2020-08-19 02:46:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:31,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-19 02:46:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:31,077 INFO L225 Difference]: With dead ends: 161 [2020-08-19 02:46:31,078 INFO L226 Difference]: Without dead ends: 121 [2020-08-19 02:46:31,079 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 [2020-08-19 02:46:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-08-19 02:46:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-08-19 02:46:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-19 02:46:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2020-08-19 02:46:31,100 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 13 [2020-08-19 02:46:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:31,101 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2020-08-19 02:46:31,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2020-08-19 02:46:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:46:31,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:31,103 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:31,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:46:31,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:31,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1216248382, now seen corresponding path program 1 times [2020-08-19 02:46:31,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:31,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051553930] [2020-08-19 02:46:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:31,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:46:31,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051553930] [2020-08-19 02:46:31,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:31,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:31,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119048505] [2020-08-19 02:46:31,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:31,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:31,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:31,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:31,154 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand 3 states. [2020-08-19 02:46:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:31,315 INFO L93 Difference]: Finished difference Result 281 states and 440 transitions. [2020-08-19 02:46:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:31,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 02:46:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:31,319 INFO L225 Difference]: With dead ends: 281 [2020-08-19 02:46:31,319 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 02:46:31,320 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 [2020-08-19 02:46:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 02:46:31,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-08-19 02:46:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-19 02:46:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 220 transitions. [2020-08-19 02:46:31,341 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 220 transitions. Word has length 19 [2020-08-19 02:46:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:31,342 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 220 transitions. [2020-08-19 02:46:31,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:31,342 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 220 transitions. [2020-08-19 02:46:31,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:46:31,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:31,344 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:31,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:46:31,344 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:31,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:31,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1216188800, now seen corresponding path program 1 times [2020-08-19 02:46:31,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:31,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691105008] [2020-08-19 02:46:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:31,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:31,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:46:31,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691105008] [2020-08-19 02:46:31,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:31,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:31,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136584525] [2020-08-19 02:46:31,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:31,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:31,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:31,406 INFO L87 Difference]: Start difference. First operand 157 states and 220 transitions. Second operand 3 states. [2020-08-19 02:46:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:31,493 INFO L93 Difference]: Finished difference Result 309 states and 441 transitions. [2020-08-19 02:46:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:31,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 02:46:31,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:31,497 INFO L225 Difference]: With dead ends: 309 [2020-08-19 02:46:31,498 INFO L226 Difference]: Without dead ends: 207 [2020-08-19 02:46:31,500 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 [2020-08-19 02:46:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-19 02:46:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-08-19 02:46:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-08-19 02:46:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 291 transitions. [2020-08-19 02:46:31,566 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 291 transitions. Word has length 19 [2020-08-19 02:46:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:31,567 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 291 transitions. [2020-08-19 02:46:31,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 291 transitions. [2020-08-19 02:46:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-19 02:46:31,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:31,571 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] [2020-08-19 02:46:31,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:46:31,572 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:31,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1694730092, now seen corresponding path program 1 times [2020-08-19 02:46:31,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:31,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744066626] [2020-08-19 02:46:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:31,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-19 02:46:31,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744066626] [2020-08-19 02:46:31,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:31,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:31,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173885426] [2020-08-19 02:46:31,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:31,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:31,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:31,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:31,648 INFO L87 Difference]: Start difference. First operand 207 states and 291 transitions. Second operand 3 states. [2020-08-19 02:46:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:31,708 INFO L93 Difference]: Finished difference Result 411 states and 584 transitions. [2020-08-19 02:46:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:31,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-08-19 02:46:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:31,711 INFO L225 Difference]: With dead ends: 411 [2020-08-19 02:46:31,712 INFO L226 Difference]: Without dead ends: 259 [2020-08-19 02:46:31,713 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 [2020-08-19 02:46:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-19 02:46:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-08-19 02:46:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-19 02:46:31,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 364 transitions. [2020-08-19 02:46:31,737 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 364 transitions. Word has length 48 [2020-08-19 02:46:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:31,738 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 364 transitions. [2020-08-19 02:46:31,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:31,740 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 364 transitions. [2020-08-19 02:46:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:46:31,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:31,744 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] [2020-08-19 02:46:31,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:46:31,744 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:31,745 INFO L82 PathProgramCache]: Analyzing trace with hash 365198397, now seen corresponding path program 1 times [2020-08-19 02:46:31,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:31,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905433670] [2020-08-19 02:46:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 02:46:31,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905433670] [2020-08-19 02:46:31,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:31,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:31,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417456678] [2020-08-19 02:46:31,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:31,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:31,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:31,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:31,795 INFO L87 Difference]: Start difference. First operand 257 states and 364 transitions. Second operand 3 states. [2020-08-19 02:46:31,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:31,966 INFO L93 Difference]: Finished difference Result 517 states and 746 transitions. [2020-08-19 02:46:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:31,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-08-19 02:46:31,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:31,971 INFO L225 Difference]: With dead ends: 517 [2020-08-19 02:46:31,971 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 02:46:31,974 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 [2020-08-19 02:46:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 02:46:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2020-08-19 02:46:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-19 02:46:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 245 transitions. [2020-08-19 02:46:31,987 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 245 transitions. Word has length 51 [2020-08-19 02:46:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:31,988 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 245 transitions. [2020-08-19 02:46:31,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 245 transitions. [2020-08-19 02:46:31,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 02:46:31,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:31,991 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] [2020-08-19 02:46:31,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:46:31,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:31,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:31,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1939547864, now seen corresponding path program 1 times [2020-08-19 02:46:31,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:31,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837850285] [2020-08-19 02:46:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:32,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-19 02:46:32,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837850285] [2020-08-19 02:46:32,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:32,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:32,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858444279] [2020-08-19 02:46:32,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:32,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:32,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:32,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:32,068 INFO L87 Difference]: Start difference. First operand 186 states and 245 transitions. Second operand 3 states. [2020-08-19 02:46:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:32,088 INFO L93 Difference]: Finished difference Result 305 states and 376 transitions. [2020-08-19 02:46:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:32,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-08-19 02:46:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:32,089 INFO L225 Difference]: With dead ends: 305 [2020-08-19 02:46:32,089 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:46:32,090 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 [2020-08-19 02:46:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:46:32,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:46:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:46:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:46:32,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2020-08-19 02:46:32,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:32,092 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:46:32,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:32,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:46:32,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:46:32,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:46:32,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:46:32,283 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 02:46:32,283 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:46:32,283 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:46:32,284 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 02:46:32,284 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 02:46:32,284 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:46:32,284 INFO L268 CegarLoopResult]: For program point L60(lines 60 189) no Hoare annotation was computed. [2020-08-19 02:46:32,284 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 217) no Hoare annotation was computed. [2020-08-19 02:46:32,284 INFO L268 CegarLoopResult]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2020-08-19 02:46:32,284 INFO L268 CegarLoopResult]: For program point L52(lines 52 193) no Hoare annotation was computed. [2020-08-19 02:46:32,285 INFO L268 CegarLoopResult]: For program point L85-1(lines 74 183) no Hoare annotation was computed. [2020-08-19 02:46:32,285 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))) [2020-08-19 02:46:32,285 INFO L268 CegarLoopResult]: For program point L44(lines 44 197) no Hoare annotation was computed. [2020-08-19 02:46:32,285 INFO L268 CegarLoopResult]: For program point L135(lines 135 139) no Hoare annotation was computed. [2020-08-19 02:46:32,285 INFO L264 CegarLoopResult]: At program point L69(lines 68 185) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-19 02:46:32,285 INFO L268 CegarLoopResult]: For program point L36(lines 36 201) no Hoare annotation was computed. [2020-08-19 02:46:32,285 INFO L264 CegarLoopResult]: At program point L61(lines 60 189) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,286 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,286 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,286 INFO L268 CegarLoopResult]: For program point L78-1(lines 78 80) no Hoare annotation was computed. [2020-08-19 02:46:32,286 INFO L268 CegarLoopResult]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2020-08-19 02:46:32,286 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,286 INFO L268 CegarLoopResult]: For program point L29(lines 29 204) no Hoare annotation was computed. [2020-08-19 02:46:32,286 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,287 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,287 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 217) no Hoare annotation was computed. [2020-08-19 02:46:32,287 INFO L268 CegarLoopResult]: For program point L162-1(lines 162 164) no Hoare annotation was computed. [2020-08-19 02:46:32,287 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-08-19 02:46:32,287 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,287 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-08-19 02:46:32,288 INFO L268 CegarLoopResult]: For program point L105(lines 105 123) no Hoare annotation was computed. [2020-08-19 02:46:32,288 INFO L268 CegarLoopResult]: For program point L72(lines 72 183) no Hoare annotation was computed. [2020-08-19 02:46:32,288 INFO L268 CegarLoopResult]: For program point L64(lines 64 187) no Hoare annotation was computed. [2020-08-19 02:46:32,288 INFO L268 CegarLoopResult]: For program point L56(lines 56 191) no Hoare annotation was computed. [2020-08-19 02:46:32,288 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-19 02:46:32,288 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-08-19 02:46:32,289 INFO L268 CegarLoopResult]: For program point L114(lines 114 118) no Hoare annotation was computed. [2020-08-19 02:46:32,289 INFO L268 CegarLoopResult]: For program point L48(lines 48 195) no Hoare annotation was computed. [2020-08-19 02:46:32,289 INFO L268 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-08-19 02:46:32,289 INFO L268 CegarLoopResult]: For program point L106(lines 106 110) no Hoare annotation was computed. [2020-08-19 02:46:32,289 INFO L264 CegarLoopResult]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-19 02:46:32,289 INFO L268 CegarLoopResult]: For program point L40(lines 40 199) no Hoare annotation was computed. [2020-08-19 02:46:32,290 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))))) [2020-08-19 02:46:32,290 INFO L268 CegarLoopResult]: For program point L32(lines 32 203) no Hoare annotation was computed. [2020-08-19 02:46:32,290 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,290 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,290 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-08-19 02:46:32,291 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,291 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 02:46:32,291 INFO L268 CegarLoopResult]: For program point L68(lines 68 185) no Hoare annotation was computed. [2020-08-19 02:46:32,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:46:32 BoogieIcfgContainer [2020-08-19 02:46:32,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:46:32,318 INFO L168 Benchmark]: Toolchain (without parser) took 2739.36 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 102.0 MB in the beginning and 108.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:32,319 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:46:32,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.71 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 90.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:32,321 INFO L168 Benchmark]: Boogie Preprocessor took 126.65 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.7 MB in the beginning and 178.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:32,321 INFO L168 Benchmark]: RCFGBuilder took 395.81 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 159.2 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:32,323 INFO L168 Benchmark]: TraceAbstraction took 1911.24 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 158.5 MB in the beginning and 108.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:32,327 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.71 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 90.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.65 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.7 MB in the beginning and 178.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.81 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 159.2 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1911.24 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 158.5 MB in the beginning and 108.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 82.3 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: 1.6s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 460 SDtfs, 252 SDslu, 319 SDs, 0 SdLazy, 194 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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, 0.2s 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...