/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:32:15,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:32:15,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:32:15,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:32:15,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:32:15,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:32:15,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:32:15,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:32:15,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:32:15,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:32:15,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:32:15,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:32:15,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:32:15,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:32:15,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:32:15,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:32:15,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:32:15,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:32:15,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:32:15,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:32:15,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:32:15,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:32:15,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:32:15,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:32:15,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:32:15,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:32:15,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:32:15,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:32:15,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:32:15,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:32:15,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:32:15,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:32:15,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:32:15,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:32:15,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:32:15,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:32:15,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:32:15,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:32:15,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:32:15,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:32:15,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:32:15,432 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 [2020-09-21 11:32:15,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:32:15,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:32:15,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:32:15,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:32:15,489 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:32:15,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:32:15,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:32:15,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:32:15,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:32:15,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:32:15,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:32:15,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:32:15,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:32:15,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:32:15,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:32:15,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:32:15,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:32:15,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:32:15,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:32:15,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:32:15,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:32:15,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:32:15,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:32:15,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:32:15,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:32:15,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:32:15,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:32:15,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:32:15,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:32:15,496 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:32:15,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:32:15,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:32:15,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:32:15,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:32:15,979 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:32:15,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-09-21 11:32:16,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c23bc5a72/750b6a1c03704cb7ac22a6b7f5a062ef/FLAGc64852477 [2020-09-21 11:32:16,624 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:32:16,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-09-21 11:32:16,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c23bc5a72/750b6a1c03704cb7ac22a6b7f5a062ef/FLAGc64852477 [2020-09-21 11:32:16,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c23bc5a72/750b6a1c03704cb7ac22a6b7f5a062ef [2020-09-21 11:32:16,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:32:16,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:32:17,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:32:17,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:32:17,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:32:17,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:16" (1/1) ... [2020-09-21 11:32:17,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3eacf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17, skipping insertion in model container [2020-09-21 11:32:17,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:16" (1/1) ... [2020-09-21 11:32:17,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:32:17,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:32:17,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:32:17,298 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:32:17,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:32:17,334 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:32:17,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17 WrapperNode [2020-09-21 11:32:17,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:32:17,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:32:17,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:32:17,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:32:17,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (1/1) ... [2020-09-21 11:32:17,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (1/1) ... [2020-09-21 11:32:17,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (1/1) ... [2020-09-21 11:32:17,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (1/1) ... [2020-09-21 11:32:17,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (1/1) ... [2020-09-21 11:32:17,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (1/1) ... [2020-09-21 11:32:17,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (1/1) ... [2020-09-21 11:32:17,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:32:17,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:32:17,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:32:17,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:32:17,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (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 [2020-09-21 11:32:17,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:32:17,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:32:17,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:32:17,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:32:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:32:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:32:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:32:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:32:17,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:32:17,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:32:17,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:32:17,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:32:17,749 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:32:17,749 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:32:17,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:17 BoogieIcfgContainer [2020-09-21 11:32:17,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:32:17,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:32:17,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:32:17,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:32:17,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:32:16" (1/3) ... [2020-09-21 11:32:17,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411d684a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:17, skipping insertion in model container [2020-09-21 11:32:17,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:17" (2/3) ... [2020-09-21 11:32:17,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411d684a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:17, skipping insertion in model container [2020-09-21 11:32:17,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:17" (3/3) ... [2020-09-21 11:32:17,797 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-09-21 11:32:17,813 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:32:17,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:32:17,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:32:17,880 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:32:17,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:32:17,881 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:32:17,881 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:32:17,881 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:32:17,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:32:17,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:32:17,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:32:17,905 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-09-21 11:32:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 11:32:17,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:17,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:17,913 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:17,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:17,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1434042835, now seen corresponding path program 1 times [2020-09-21 11:32:17,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:17,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028861994] [2020-09-21 11:32:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:18,115 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:32:18,116 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -8 [2020-09-21 11:32:18,116 FATAL L256 erpolLogProxyWrapper]: Difference in width: 8 [2020-09-21 11:32:18,116 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:18,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:32:18,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:18,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:32:18,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:32:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:32:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:32:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:18,387 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:18,388 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:18,388 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:18,388 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:18,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:18,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:32:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:18,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028861994] [2020-09-21 11:32:18,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:18,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:32:18,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463292224] [2020-09-21 11:32:18,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:32:18,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:18,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:32:18,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:18,462 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-09-21 11:32:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:18,832 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-09-21 11:32:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:32:18,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-21 11:32:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:18,850 INFO L225 Difference]: With dead ends: 32 [2020-09-21 11:32:18,850 INFO L226 Difference]: Without dead ends: 14 [2020-09-21 11:32:18,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:32:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-09-21 11:32:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-09-21 11:32:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-09-21 11:32:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-09-21 11:32:18,910 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-09-21 11:32:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:18,911 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-09-21 11:32:18,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:32:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-09-21 11:32:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:32:18,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:18,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:18,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:32:18,913 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:18,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1507594220, now seen corresponding path program 1 times [2020-09-21 11:32:18,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:18,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525203274] [2020-09-21 11:32:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:19,007 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:19,007 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:19,008 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:19,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:19,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:32:19,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 11:32:19,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:32:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:32:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:32:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-21 11:32:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:19,257 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:19,257 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:19,257 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:19,257 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:19,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:19,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:19,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:19,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:19,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:19,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:19,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:19,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525203274] [2020-09-21 11:32:19,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:19,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:32:19,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640858077] [2020-09-21 11:32:19,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:32:19,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:32:19,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:32:19,271 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2020-09-21 11:32:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:19,433 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-09-21 11:32:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:32:19,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-21 11:32:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:19,434 INFO L225 Difference]: With dead ends: 19 [2020-09-21 11:32:19,434 INFO L226 Difference]: Without dead ends: 15 [2020-09-21 11:32:19,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:32:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-21 11:32:19,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-21 11:32:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-21 11:32:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-09-21 11:32:19,442 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-09-21 11:32:19,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:19,442 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-09-21 11:32:19,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:32:19,443 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-09-21 11:32:19,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:32:19,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:19,444 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:19,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:32:19,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:19,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:19,445 INFO L82 PathProgramCache]: Analyzing trace with hash 507280141, now seen corresponding path program 2 times [2020-09-21 11:32:19,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:19,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022998609] [2020-09-21 11:32:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:19,494 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:19,494 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:19,494 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:19,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:32:19,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:19,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:32:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:32:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:32:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:32:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:19,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:19,664 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:19,665 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:19,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:19,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:19,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:19,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:19,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:19,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:32:19,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022998609] [2020-09-21 11:32:19,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:19,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:32:19,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941627368] [2020-09-21 11:32:19,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:32:19,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:19,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:32:19,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:32:19,673 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2020-09-21 11:32:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:19,756 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-09-21 11:32:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:32:19,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-21 11:32:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:19,757 INFO L225 Difference]: With dead ends: 15 [2020-09-21 11:32:19,757 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:32:19,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:32:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:32:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:32:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:32:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:32:19,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-21 11:32:19,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:19,760 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:32:19,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:32:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:32:19,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:32:19,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:32:19,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:32:19,832 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:32:19,833 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|)) [2020-09-21 11:32:19,833 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:32:19,833 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:32:19,834 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:32:19,834 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:32:19,834 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:32:19,834 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:32:19,834 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 11:32:19,835 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:32:19,835 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:32:19,835 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) no Hoare annotation was computed. [2020-09-21 11:32:19,835 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-21 11:32:19,835 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 68) no Hoare annotation was computed. [2020-09-21 11:32:19,835 INFO L268 CegarLoopResult]: For program point L23(lines 23 66) no Hoare annotation was computed. [2020-09-21 11:32:19,836 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-21 11:32:19,836 INFO L268 CegarLoopResult]: For program point L17(lines 17 67) no Hoare annotation was computed. [2020-09-21 11:32:19,836 INFO L268 CegarLoopResult]: For program point L49(lines 49 58) no Hoare annotation was computed. [2020-09-21 11:32:19,836 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 68) no Hoare annotation was computed. [2020-09-21 11:32:19,836 INFO L268 CegarLoopResult]: For program point L42(lines 42 64) no Hoare annotation was computed. [2020-09-21 11:32:19,836 INFO L264 CegarLoopResult]: At program point L38(lines 28 66) the Hoare annotation is: (and (= |old(~__return_72~0)| ~__return_72~0) (or (not (= main_~main__j~0 main_~main__i~0)) (= main_~main__x~0 main_~main__y~0))) [2020-09-21 11:32:19,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:32:19 BoogieIcfgContainer [2020-09-21 11:32:19,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:32:19,872 INFO L168 Benchmark]: Toolchain (without parser) took 2874.89 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 104.7 MB in the beginning and 117.9 MB in the end (delta: -13.2 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:19,873 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:32:19,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.82 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 94.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:19,877 INFO L168 Benchmark]: Boogie Preprocessor took 110.05 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 182.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:19,884 INFO L168 Benchmark]: RCFGBuilder took 310.37 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 169.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:19,891 INFO L168 Benchmark]: TraceAbstraction took 2092.76 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 168.9 MB in the beginning and 117.9 MB in the end (delta: 51.0 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:19,898 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.82 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 94.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.05 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 182.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.37 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 169.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2092.76 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 168.9 MB in the beginning and 117.9 MB in the end (delta: 51.0 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: 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: 28]: Loop Invariant Derived loop invariant: \old(__return_72) == __return_72 && (!(main__j == main__i) || main__x == main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 46 SDslu, 65 SDs, 0 SdLazy, 97 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 24 HoareAnnotationTreeSize, 5 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2579 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/4 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...