/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 -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 [2020-08-18 16:17:00,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:17:00,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:17:00,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:17:00,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:17:00,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:17:00,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:17:00,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:17:00,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:17:00,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:17:00,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:17:00,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:17:00,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:17:00,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:17:00,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:17:00,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:17:00,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:17:00,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:17:00,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:17:00,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:17:00,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:17:00,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:17:00,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:17:00,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:17:00,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:17:00,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:17:00,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:17:00,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:17:00,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:17:00,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:17:00,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:17:00,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:17:00,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:17:00,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:17:00,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:17:00,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:17:00,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:17:00,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:17:00,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:17:00,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:17:00,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:17:00,442 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 [2020-08-18 16:17:00,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:17:00,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:17:00,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:17:00,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:17:00,489 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:17:00,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:17:00,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:17:00,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:17:00,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:17:00,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:17:00,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:17:00,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:17:00,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:17:00,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:17:00,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:17:00,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:17:00,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:17:00,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:17:00,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:17:00,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:17:00,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:17:00,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:17:00,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:17:00,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:17:00,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:17:00,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:17:00,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:17:00,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:17:00,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:17:00,495 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 [2020-08-18 16:17:00,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:17:00,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:17:00,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:17:00,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:17:00,816 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:17:00,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-08-18 16:17:00,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1af99892/a61dbaee0eb44df8a4541b90b6cddfe0/FLAG40b92fa32 [2020-08-18 16:17:01,353 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:17:01,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-08-18 16:17:01,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1af99892/a61dbaee0eb44df8a4541b90b6cddfe0/FLAG40b92fa32 [2020-08-18 16:17:01,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1af99892/a61dbaee0eb44df8a4541b90b6cddfe0 [2020-08-18 16:17:01,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:17:01,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:17:01,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:17:01,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:17:01,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:17:01,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:01,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7673bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01, skipping insertion in model container [2020-08-18 16:17:01,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:01,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:17:01,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:17:01,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:17:01,966 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:17:01,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:17:01,997 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:17:01,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01 WrapperNode [2020-08-18 16:17:01,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:17:01,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:17:01,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:17:01,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:17:02,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:02,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:02,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:02,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:02,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:02,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:02,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (1/1) ... [2020-08-18 16:17:02,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:17:02,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:17:02,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:17:02,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:17:02,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (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 [2020-08-18 16:17:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:17:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:17:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:17:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:17:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 16:17:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:17:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-18 16:17:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:17:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:17:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:17:02,388 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:17:02,388 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 16:17:02,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:02 BoogieIcfgContainer [2020-08-18 16:17:02,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:17:02,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:17:02,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:17:02,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:17:02,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:17:01" (1/3) ... [2020-08-18 16:17:02,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c6dbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:17:02, skipping insertion in model container [2020-08-18 16:17:02,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:01" (2/3) ... [2020-08-18 16:17:02,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c6dbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:17:02, skipping insertion in model container [2020-08-18 16:17:02,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:02" (3/3) ... [2020-08-18 16:17:02,401 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2020-08-18 16:17:02,411 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:17:02,418 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:17:02,433 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:17:02,458 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:17:02,458 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:17:02,458 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:17:02,458 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:17:02,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:17:02,458 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:17:02,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:17:02,459 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:17:02,475 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-18 16:17:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 16:17:02,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:02,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:02,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:02,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:02,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2020-08-18 16:17:02,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:02,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352097895] [2020-08-18 16:17:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:02,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352097895] [2020-08-18 16:17:02,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:02,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:02,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922481042] [2020-08-18 16:17:02,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:02,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:02,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:02,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:02,686 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-08-18 16:17:02,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:02,784 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-08-18 16:17:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:02,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-08-18 16:17:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:02,799 INFO L225 Difference]: With dead ends: 70 [2020-08-18 16:17:02,799 INFO L226 Difference]: Without dead ends: 39 [2020-08-18 16:17:02,803 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 [2020-08-18 16:17:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-18 16:17:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-18 16:17:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 16:17:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-08-18 16:17:02,866 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2020-08-18 16:17:02,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:02,870 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-08-18 16:17:02,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-08-18 16:17:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 16:17:02,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:02,872 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:02,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:17:02,875 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:02,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2020-08-18 16:17:02,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:02,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732751950] [2020-08-18 16:17:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:02,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732751950] [2020-08-18 16:17:02,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:02,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:02,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159180106] [2020-08-18 16:17:02,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:02,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:02,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:02,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:02,922 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-08-18 16:17:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:02,991 INFO L93 Difference]: Finished difference Result 73 states and 110 transitions. [2020-08-18 16:17:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:02,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-18 16:17:02,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:02,994 INFO L225 Difference]: With dead ends: 73 [2020-08-18 16:17:02,994 INFO L226 Difference]: Without dead ends: 55 [2020-08-18 16:17:02,996 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 [2020-08-18 16:17:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-18 16:17:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-18 16:17:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-18 16:17:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2020-08-18 16:17:03,010 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 13 [2020-08-18 16:17:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:03,010 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2020-08-18 16:17:03,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2020-08-18 16:17:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 16:17:03,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:03,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:03,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:17:03,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:03,013 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2020-08-18 16:17:03,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:03,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137560177] [2020-08-18 16:17:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:17:03,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137560177] [2020-08-18 16:17:03,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:03,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:03,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087237733] [2020-08-18 16:17:03,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:03,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:03,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:03,078 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand 3 states. [2020-08-18 16:17:03,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:03,177 INFO L93 Difference]: Finished difference Result 107 states and 157 transitions. [2020-08-18 16:17:03,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:03,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-18 16:17:03,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:03,180 INFO L225 Difference]: With dead ends: 107 [2020-08-18 16:17:03,180 INFO L226 Difference]: Without dead ends: 73 [2020-08-18 16:17:03,181 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 [2020-08-18 16:17:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-08-18 16:17:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-08-18 16:17:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-18 16:17:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 103 transitions. [2020-08-18 16:17:03,202 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 103 transitions. Word has length 20 [2020-08-18 16:17:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:03,202 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 103 transitions. [2020-08-18 16:17:03,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 103 transitions. [2020-08-18 16:17:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 16:17:03,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:03,204 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] [2020-08-18 16:17:03,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:17:03,205 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:03,205 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2020-08-18 16:17:03,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:03,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468554341] [2020-08-18 16:17:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:17:03,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468554341] [2020-08-18 16:17:03,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:03,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:03,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874437932] [2020-08-18 16:17:03,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:03,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:03,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:03,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:03,254 INFO L87 Difference]: Start difference. First operand 71 states and 103 transitions. Second operand 3 states. [2020-08-18 16:17:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:03,323 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2020-08-18 16:17:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:03,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-18 16:17:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:03,326 INFO L225 Difference]: With dead ends: 141 [2020-08-18 16:17:03,326 INFO L226 Difference]: Without dead ends: 61 [2020-08-18 16:17:03,327 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 [2020-08-18 16:17:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-18 16:17:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-08-18 16:17:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-08-18 16:17:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2020-08-18 16:17:03,338 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 23 [2020-08-18 16:17:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:03,339 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2020-08-18 16:17:03,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-08-18 16:17:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-18 16:17:03,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:03,341 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] [2020-08-18 16:17:03,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:17:03,341 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:03,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:03,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2020-08-18 16:17:03,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:03,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861536774] [2020-08-18 16:17:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 16:17:03,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861536774] [2020-08-18 16:17:03,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:03,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:03,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224905041] [2020-08-18 16:17:03,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:03,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:03,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:03,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:03,402 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand 3 states. [2020-08-18 16:17:03,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:03,420 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2020-08-18 16:17:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:03,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-08-18 16:17:03,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:03,421 INFO L225 Difference]: With dead ends: 99 [2020-08-18 16:17:03,421 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:17:03,423 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 [2020-08-18 16:17:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:17:03,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:17:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:17:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:17:03,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-08-18 16:17:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:03,424 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:17:03,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:17:03,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:17:03,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:17:03,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:17:03,634 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 16:17:03,634 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 16:17:03,635 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 16:17:03,635 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 16:17:03,635 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 16:17:03,635 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 16:17:03,635 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 140) no Hoare annotation was computed. [2020-08-18 16:17:03,635 INFO L268 CegarLoopResult]: For program point L77-1(lines 53 106) no Hoare annotation was computed. [2020-08-18 16:17:03,635 INFO L268 CegarLoopResult]: For program point L69(lines 69 73) no Hoare annotation was computed. [2020-08-18 16:17:03,636 INFO L268 CegarLoopResult]: For program point L24(lines 24 127) no Hoare annotation was computed. [2020-08-18 16:17:03,636 INFO L268 CegarLoopResult]: For program point L57-1(lines 53 106) no Hoare annotation was computed. [2020-08-18 16:17:03,636 INFO L268 CegarLoopResult]: For program point L49(lines 49 108) no Hoare annotation was computed. [2020-08-18 16:17:03,636 INFO L268 CegarLoopResult]: For program point L45(lines 45 110) no Hoare annotation was computed. [2020-08-18 16:17:03,636 INFO L271 CegarLoopResult]: At program point L136(lines 8 140) the Hoare annotation is: true [2020-08-18 16:17:03,637 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)) [2020-08-18 16:17:03,637 INFO L268 CegarLoopResult]: For program point L95(lines 95 97) no Hoare annotation was computed. [2020-08-18 16:17:03,637 INFO L268 CegarLoopResult]: For program point L29(lines 29 124) no Hoare annotation was computed. [2020-08-18 16:17:03,637 INFO L264 CegarLoopResult]: At program point L25(lines 24 127) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-18 16:17:03,637 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))))) [2020-08-18 16:17:03,638 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))))) [2020-08-18 16:17:03,638 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 140) no Hoare annotation was computed. [2020-08-18 16:17:03,638 INFO L264 CegarLoopResult]: At program point L96(lines 8 140) the Hoare annotation is: false [2020-08-18 16:17:03,638 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 138) no Hoare annotation was computed. [2020-08-18 16:17:03,638 INFO L264 CegarLoopResult]: At program point L30(lines 29 124) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-18 16:17:03,639 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 140) the Hoare annotation is: true [2020-08-18 16:17:03,639 INFO L268 CegarLoopResult]: For program point L92-1(lines 53 106) no Hoare annotation was computed. [2020-08-18 16:17:03,639 INFO L268 CegarLoopResult]: For program point L88-1(lines 53 106) no Hoare annotation was computed. [2020-08-18 16:17:03,639 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-18 16:17:03,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:17:03 BoogieIcfgContainer [2020-08-18 16:17:03,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:17:03,663 INFO L168 Benchmark]: Toolchain (without parser) took 1931.98 ms. Allocated memory was 140.0 MB in the beginning and 235.4 MB in the end (delta: 95.4 MB). Free memory was 103.1 MB in the beginning and 201.8 MB in the end (delta: -98.7 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:03,664 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:17:03,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.12 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:03,666 INFO L168 Benchmark]: Boogie Preprocessor took 105.53 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 92.3 MB in the beginning and 179.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:03,667 INFO L168 Benchmark]: RCFGBuilder took 288.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 165.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:03,668 INFO L168 Benchmark]: TraceAbstraction took 1266.12 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 164.3 MB in the beginning and 201.8 MB in the end (delta: -37.5 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:03,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.12 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.53 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 92.3 MB in the beginning and 179.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 165.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1266.12 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 164.3 MB in the beginning and 201.8 MB in the end (delta: -37.5 MB). Peak memory consumption was 82.4 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: 0.9s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 147 SDtfs, 81 SDslu, 98 SDs, 0 SdLazy, 77 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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...