/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:23:29,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:23:29,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:23:29,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:23:29,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:23:29,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:23:29,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:23:29,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:23:29,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:23:29,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:23:29,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:23:29,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:23:29,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:23:29,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:23:29,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:23:29,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:23:29,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:23:29,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:23:29,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:23:29,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:23:29,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:23:29,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:23:29,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:23:29,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:23:29,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 04:23:29,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:23:29,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:23:29,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:23:29,304 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 04:23:29,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:23:29,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:23:29,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:23:29,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:23:29,356 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:23:29,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:23:29,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:23:29,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:23:29,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:23:29,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:23:29,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:23:29,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:23:29,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:23:29,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:23:29,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:23:29,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:23:29,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:23:29,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:23:29,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:23:29,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:23:29,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:23:29,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:23:29,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:23:29,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:23:29,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:23:29,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:23:29,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:23:29,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:23:29,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:23:29,363 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:23:29,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:23:29,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:23:29,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:23:29,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:23:29,717 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:23:29,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-08-19 04:23:29,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd4bd920/ce00792fdb164e56a799e482d37329b4/FLAGa38620ac7 [2020-08-19 04:23:30,251 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:23:30,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-08-19 04:23:30,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd4bd920/ce00792fdb164e56a799e482d37329b4/FLAGa38620ac7 [2020-08-19 04:23:30,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd4bd920/ce00792fdb164e56a799e482d37329b4 [2020-08-19 04:23:30,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:23:30,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:23:30,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:30,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:23:30,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:23:30,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:30,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3161b126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30, skipping insertion in model container [2020-08-19 04:23:30,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:30,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:23:30,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:23:30,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:30,881 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:23:30,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:30,911 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:23:30,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30 WrapperNode [2020-08-19 04:23:30,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:30,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:23:30,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:23:30,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:23:30,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:30,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:31,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:31,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:31,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:31,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:31,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (1/1) ... [2020-08-19 04:23:31,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:23:31,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:23:31,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:23:31,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:23:31,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (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 04:23:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:23:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:23:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:23:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:23:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 04:23:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:23:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 04:23:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:23:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:23:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:23:31,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:23:31,307 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 04:23:31,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:31 BoogieIcfgContainer [2020-08-19 04:23:31,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:23:31,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:23:31,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:23:31,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:23:31,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:23:30" (1/3) ... [2020-08-19 04:23:31,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5322ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:31, skipping insertion in model container [2020-08-19 04:23:31,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:30" (2/3) ... [2020-08-19 04:23:31,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5322ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:31, skipping insertion in model container [2020-08-19 04:23:31,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:31" (3/3) ... [2020-08-19 04:23:31,320 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2020-08-19 04:23:31,334 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:23:31,341 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:23:31,355 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:23:31,379 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:23:31,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:23:31,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:23:31,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:23:31,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:23:31,380 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:23:31,380 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:23:31,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:23:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-19 04:23:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-19 04:23:31,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:31,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:31,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:31,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:31,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2020-08-19 04:23:31,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:31,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096758754] [2020-08-19 04:23:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,561 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 04:23:31,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096758754] [2020-08-19 04:23:31,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:31,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:31,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621197751] [2020-08-19 04:23:31,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:31,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:31,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:31,589 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-08-19 04:23:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:31,733 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-08-19 04:23:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:31,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-08-19 04:23:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:31,749 INFO L225 Difference]: With dead ends: 70 [2020-08-19 04:23:31,750 INFO L226 Difference]: Without dead ends: 39 [2020-08-19 04:23:31,754 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 04:23:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-19 04:23:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-19 04:23:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-19 04:23:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-08-19 04:23:31,822 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2020-08-19 04:23:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:31,823 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-08-19 04:23:31,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-08-19 04:23:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 04:23:31,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:31,825 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:31,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:23:31,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:31,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:31,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2020-08-19 04:23:31,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:31,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937947251] [2020-08-19 04:23:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,859 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 04:23:31,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937947251] [2020-08-19 04:23:31,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:31,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:31,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463955075] [2020-08-19 04:23:31,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:31,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:31,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:31,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:31,864 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-08-19 04:23:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:31,939 INFO L93 Difference]: Finished difference Result 73 states and 110 transitions. [2020-08-19 04:23:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:31,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-19 04:23:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:31,941 INFO L225 Difference]: With dead ends: 73 [2020-08-19 04:23:31,942 INFO L226 Difference]: Without dead ends: 55 [2020-08-19 04:23:31,943 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 04:23:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-19 04:23:31,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-19 04:23:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 04:23:31,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2020-08-19 04:23:31,956 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 13 [2020-08-19 04:23:31,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:31,957 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2020-08-19 04:23:31,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:31,957 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2020-08-19 04:23:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 04:23:31,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:31,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:31,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:23:31,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:31,960 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2020-08-19 04:23:31,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:31,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284392559] [2020-08-19 04:23:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:23:32,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284392559] [2020-08-19 04:23:32,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:32,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:32,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638918018] [2020-08-19 04:23:32,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:32,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:32,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:32,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:32,040 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand 3 states. [2020-08-19 04:23:32,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:32,147 INFO L93 Difference]: Finished difference Result 107 states and 157 transitions. [2020-08-19 04:23:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:32,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 04:23:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:32,153 INFO L225 Difference]: With dead ends: 107 [2020-08-19 04:23:32,153 INFO L226 Difference]: Without dead ends: 73 [2020-08-19 04:23:32,155 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 04:23:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-08-19 04:23:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-08-19 04:23:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-19 04:23:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 103 transitions. [2020-08-19 04:23:32,188 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 103 transitions. Word has length 20 [2020-08-19 04:23:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:32,189 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 103 transitions. [2020-08-19 04:23:32,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 103 transitions. [2020-08-19 04:23:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 04:23:32,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:32,191 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:32,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:23:32,192 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:32,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2020-08-19 04:23:32,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:32,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240527575] [2020-08-19 04:23:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,252 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 04:23:32,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240527575] [2020-08-19 04:23:32,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:32,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:32,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284640842] [2020-08-19 04:23:32,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:32,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:32,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:32,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:32,255 INFO L87 Difference]: Start difference. First operand 71 states and 103 transitions. Second operand 3 states. [2020-08-19 04:23:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:32,309 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2020-08-19 04:23:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:32,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 04:23:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:32,311 INFO L225 Difference]: With dead ends: 141 [2020-08-19 04:23:32,311 INFO L226 Difference]: Without dead ends: 61 [2020-08-19 04:23:32,312 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 04:23:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-19 04:23:32,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-08-19 04:23:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-08-19 04:23:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2020-08-19 04:23:32,322 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 23 [2020-08-19 04:23:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:32,323 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2020-08-19 04:23:32,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-08-19 04:23:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 04:23:32,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:32,324 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:32,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:23:32,325 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:32,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:32,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2020-08-19 04:23:32,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:32,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681395084] [2020-08-19 04:23:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 04:23:32,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681395084] [2020-08-19 04:23:32,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:32,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:32,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546896471] [2020-08-19 04:23:32,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:32,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:32,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:32,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:32,395 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand 3 states. [2020-08-19 04:23:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:32,418 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2020-08-19 04:23:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:32,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-08-19 04:23:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:32,421 INFO L225 Difference]: With dead ends: 99 [2020-08-19 04:23:32,421 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:23:32,423 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 04:23:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:23:32,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:23:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:23:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:23:32,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-08-19 04:23:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:32,424 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:23:32,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:23:32,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:23:32,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:23:32,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:23:32,587 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 04:23:32,588 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:23:32,588 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:23:32,588 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 04:23:32,588 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 04:23:32,588 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:23:32,588 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 140) no Hoare annotation was computed. [2020-08-19 04:23:32,588 INFO L268 CegarLoopResult]: For program point L77-1(lines 53 106) no Hoare annotation was computed. [2020-08-19 04:23:32,588 INFO L268 CegarLoopResult]: For program point L69(lines 69 73) no Hoare annotation was computed. [2020-08-19 04:23:32,589 INFO L268 CegarLoopResult]: For program point L24(lines 24 127) no Hoare annotation was computed. [2020-08-19 04:23:32,589 INFO L268 CegarLoopResult]: For program point L57-1(lines 53 106) no Hoare annotation was computed. [2020-08-19 04:23:32,589 INFO L268 CegarLoopResult]: For program point L49(lines 49 108) no Hoare annotation was computed. [2020-08-19 04:23:32,589 INFO L268 CegarLoopResult]: For program point L45(lines 45 110) no Hoare annotation was computed. [2020-08-19 04:23:32,589 INFO L271 CegarLoopResult]: At program point L136(lines 8 140) the Hoare annotation is: true [2020-08-19 04:23:32,589 INFO L264 CegarLoopResult]: At program point L99(lines 17 134) the Hoare annotation is: (or (and (<= 8640 main_~s__state~0) (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2)) [2020-08-19 04:23:32,589 INFO L268 CegarLoopResult]: For program point L95(lines 95 97) no Hoare annotation was computed. [2020-08-19 04:23:32,590 INFO L268 CegarLoopResult]: For program point L29(lines 29 124) no Hoare annotation was computed. [2020-08-19 04:23:32,590 INFO L264 CegarLoopResult]: At program point L25(lines 24 127) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 04:23:32,590 INFO L264 CegarLoopResult]: At program point L50(lines 49 108) 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 04:23:32,590 INFO L264 CegarLoopResult]: At program point L46(lines 45 110) 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 04:23:32,590 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 140) no Hoare annotation was computed. [2020-08-19 04:23:32,590 INFO L264 CegarLoopResult]: At program point L96(lines 8 140) the Hoare annotation is: false [2020-08-19 04:23:32,591 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 138) no Hoare annotation was computed. [2020-08-19 04:23:32,591 INFO L264 CegarLoopResult]: At program point L30(lines 29 124) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-19 04:23:32,591 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 140) the Hoare annotation is: true [2020-08-19 04:23:32,591 INFO L268 CegarLoopResult]: For program point L92-1(lines 53 106) no Hoare annotation was computed. [2020-08-19 04:23:32,591 INFO L268 CegarLoopResult]: For program point L88-1(lines 53 106) no Hoare annotation was computed. [2020-08-19 04:23:32,591 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-19 04:23:32,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:23:32 BoogieIcfgContainer [2020-08-19 04:23:32,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:23:32,614 INFO L168 Benchmark]: Toolchain (without parser) took 1975.71 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.2 MB in the beginning and 200.0 MB in the end (delta: -97.8 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:32,615 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:23:32,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.70 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 91.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:32,617 INFO L168 Benchmark]: Boogie Preprocessor took 114.13 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 179.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:32,618 INFO L168 Benchmark]: RCFGBuilder took 284.42 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:32,619 INFO L168 Benchmark]: TraceAbstraction took 1298.68 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 164.7 MB in the beginning and 200.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:32,623 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 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.70 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 91.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.13 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 179.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.42 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1298.68 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 164.7 MB in the beginning and 200.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: 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: 49]: 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: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0)) || blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (8640 <= s__state && blastFlag <= 2) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0)) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 147 SDtfs, 81 SDslu, 98 SDs, 0 SdLazy, 77 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 31 NumberOfFragments, 65 HoareAnnotationTreeSize, 11 FomulaSimplifications, 123 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 4434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 40/40 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...