/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:42:44,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:42:44,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:42:45,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:42:45,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:42:45,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:42:45,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:42:45,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:42:45,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:42:45,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:42:45,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:42:45,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:42:45,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:42:45,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:42:45,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:42:45,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:42:45,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:42:45,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:42:45,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:42:45,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:42:45,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:42:45,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:42:45,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:42:45,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:42:45,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:42:45,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:42:45,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:42:45,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:42:45,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:42:45,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:42:45,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:42:45,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:42:45,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:42:45,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:42:45,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:42:45,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:42:45,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:42:45,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:42:45,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:42:45,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:42:45,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:42:45,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:42:45,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:42:45,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:42:45,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:42:45,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:42:45,103 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:42:45,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:42:45,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:42:45,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:42:45,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:42:45,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:42:45,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:42:45,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:42:45,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:42:45,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:42:45,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:42:45,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:42:45,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:42:45,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:42:45,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:42:45,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:42:45,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:42:45,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:42:45,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:42:45,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:42:45,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:42:45,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:42:45,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:42:45,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:42:45,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:42:45,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:42:45,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:42:45,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:42:45,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:42:45,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:42:45,433 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:42:45,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-21 20:42:45,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f4204897/a3131a772b5a471d842fce58c41bd6f1/FLAG3115e92f0 [2020-08-21 20:42:45,953 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:42:45,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-21 20:42:45,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f4204897/a3131a772b5a471d842fce58c41bd6f1/FLAG3115e92f0 [2020-08-21 20:42:46,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f4204897/a3131a772b5a471d842fce58c41bd6f1 [2020-08-21 20:42:46,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:42:46,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:42:46,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:42:46,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:42:46,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:42:46,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46, skipping insertion in model container [2020-08-21 20:42:46,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:42:46,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:42:46,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:42:46,534 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:42:46,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:42:46,569 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:42:46,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46 WrapperNode [2020-08-21 20:42:46,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:42:46,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:42:46,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:42:46,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:42:46,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (1/1) ... [2020-08-21 20:42:46,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:42:46,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:42:46,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:42:46,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:42:46,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:42:46,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:42:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:42:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 20:42:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 20:42:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:42:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:42:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 20:42:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 20:42:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 20:42:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:42:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:42:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:42:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:42:46,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:42:46,997 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 20:42:47,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:42:47 BoogieIcfgContainer [2020-08-21 20:42:47,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:42:47,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:42:47,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:42:47,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:42:47,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:42:46" (1/3) ... [2020-08-21 20:42:47,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544b3bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:42:47, skipping insertion in model container [2020-08-21 20:42:47,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:42:46" (2/3) ... [2020-08-21 20:42:47,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544b3bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:42:47, skipping insertion in model container [2020-08-21 20:42:47,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:42:47" (3/3) ... [2020-08-21 20:42:47,010 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-08-21 20:42:47,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:42:47,030 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:42:47,047 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:42:47,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:42:47,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:42:47,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:42:47,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:42:47,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:42:47,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:42:47,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:42:47,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:42:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-21 20:42:47,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 20:42:47,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:42:47,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:42:47,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:42:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:42:47,143 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-08-21 20:42:47,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:42:47,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336065003] [2020-08-21 20:42:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:42:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:47,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:42:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:42:47,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336065003] [2020-08-21 20:42:47,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:42:47,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:42:47,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396602987] [2020-08-21 20:42:47,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:42:47,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:42:47,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:42:47,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:42:47,318 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-08-21 20:42:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:42:47,390 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-21 20:42:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:42:47,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-21 20:42:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:42:47,403 INFO L225 Difference]: With dead ends: 37 [2020-08-21 20:42:47,403 INFO L226 Difference]: Without dead ends: 18 [2020-08-21 20:42:47,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:42:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-21 20:42:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-21 20:42:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-21 20:42:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-08-21 20:42:47,446 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-08-21 20:42:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:42:47,447 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-08-21 20:42:47,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:42:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-08-21 20:42:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 20:42:47,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:42:47,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:42:47,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:42:47,449 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:42:47,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:42:47,450 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-08-21 20:42:47,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:42:47,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219141347] [2020-08-21 20:42:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:42:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:42:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:42:47,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219141347] [2020-08-21 20:42:47,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:42:47,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:42:47,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964577184] [2020-08-21 20:42:47,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:42:47,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:42:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:42:47,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:42:47,837 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2020-08-21 20:42:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:42:52,231 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2020-08-21 20:42:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 20:42:52,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-21 20:42:52,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:42:52,233 INFO L225 Difference]: With dead ends: 28 [2020-08-21 20:42:52,234 INFO L226 Difference]: Without dead ends: 23 [2020-08-21 20:42:52,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:42:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-21 20:42:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-08-21 20:42:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 20:42:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-08-21 20:42:52,242 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-08-21 20:42:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:42:52,243 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-08-21 20:42:52,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:42:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-08-21 20:42:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 20:42:52,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:42:52,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:42:52,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:42:52,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:42:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:42:52,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-08-21 20:42:52,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:42:52,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311486084] [2020-08-21 20:42:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:42:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:42:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:42:52,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311486084] [2020-08-21 20:42:52,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:42:52,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 20:42:52,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362276999] [2020-08-21 20:42:52,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 20:42:52,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:42:52,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 20:42:52,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:42:52,908 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 13 states. [2020-08-21 20:42:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:42:57,585 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-21 20:42:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 20:42:57,586 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-08-21 20:42:57,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:42:57,587 INFO L225 Difference]: With dead ends: 40 [2020-08-21 20:42:57,587 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 20:42:57,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-08-21 20:42:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 20:42:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-08-21 20:42:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-21 20:42:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-21 20:42:57,601 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-21 20:42:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:42:57,601 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-21 20:42:57,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 20:42:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-21 20:42:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 20:42:57,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:42:57,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:42:57,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:42:57,605 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:42:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:42:57,606 INFO L82 PathProgramCache]: Analyzing trace with hash -162414684, now seen corresponding path program 2 times [2020-08-21 20:42:57,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:42:57,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254491779] [2020-08-21 20:42:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:42:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:42:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:42:57,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254491779] [2020-08-21 20:42:57,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:42:57,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 20:42:57,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075257139] [2020-08-21 20:42:57,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:42:57,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:42:57,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:42:57,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:42:57,963 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-08-21 20:42:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:42:58,311 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-08-21 20:42:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:42:58,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-21 20:42:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:42:58,312 INFO L225 Difference]: With dead ends: 38 [2020-08-21 20:42:58,313 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 20:42:58,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:42:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 20:42:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-08-21 20:42:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-21 20:42:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-21 20:42:58,320 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-08-21 20:42:58,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:42:58,320 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-21 20:42:58,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:42:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-21 20:42:58,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 20:42:58,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:42:58,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:42:58,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:42:58,322 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:42:58,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:42:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash -444322542, now seen corresponding path program 1 times [2020-08-21 20:42:58,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:42:58,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99324363] [2020-08-21 20:42:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:42:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:58,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:42:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:42:58,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99324363] [2020-08-21 20:42:58,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:42:58,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 20:42:58,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195843955] [2020-08-21 20:42:58,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 20:42:58,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:42:58,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 20:42:58,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:42:58,422 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-08-21 20:42:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:42:58,537 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-21 20:42:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:42:58,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-21 20:42:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:42:58,539 INFO L225 Difference]: With dead ends: 38 [2020-08-21 20:42:58,539 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 20:42:58,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:42:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 20:42:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-08-21 20:42:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 20:42:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-21 20:42:58,546 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2020-08-21 20:42:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:42:58,546 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-21 20:42:58,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 20:42:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-21 20:42:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 20:42:58,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:42:58,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:42:58,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:42:58,548 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:42:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:42:58,548 INFO L82 PathProgramCache]: Analyzing trace with hash -450980439, now seen corresponding path program 1 times [2020-08-21 20:42:58,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:42:58,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544747717] [2020-08-21 20:42:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:42:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:58,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:42:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:42:58,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544747717] [2020-08-21 20:42:58,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:42:58,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 20:42:58,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623303723] [2020-08-21 20:42:58,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:42:58,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:42:58,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:42:58,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:42:58,899 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-08-21 20:42:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:42:59,078 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-08-21 20:42:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 20:42:59,079 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-21 20:42:59,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:42:59,080 INFO L225 Difference]: With dead ends: 37 [2020-08-21 20:42:59,080 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 20:42:59,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:42:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 20:42:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-21 20:42:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 20:42:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-08-21 20:42:59,086 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-08-21 20:42:59,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:42:59,086 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-08-21 20:42:59,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:42:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-08-21 20:42:59,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 20:42:59,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:42:59,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:42:59,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:42:59,088 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:42:59,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:42:59,089 INFO L82 PathProgramCache]: Analyzing trace with hash -514824137, now seen corresponding path program 1 times [2020-08-21 20:42:59,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:42:59,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671061237] [2020-08-21 20:42:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:42:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:59,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:42:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:42:59,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671061237] [2020-08-21 20:42:59,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:42:59,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 20:42:59,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112781331] [2020-08-21 20:42:59,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 20:42:59,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:42:59,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 20:42:59,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:42:59,185 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-08-21 20:42:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:42:59,290 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-21 20:42:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:42:59,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 20:42:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:42:59,294 INFO L225 Difference]: With dead ends: 38 [2020-08-21 20:42:59,294 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 20:42:59,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:42:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 20:42:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-08-21 20:42:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-21 20:42:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-21 20:42:59,302 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-08-21 20:42:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:42:59,303 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-21 20:42:59,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 20:42:59,303 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-21 20:42:59,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 20:42:59,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:42:59,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:42:59,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:42:59,304 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:42:59,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:42:59,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-08-21 20:42:59,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:42:59,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207606012] [2020-08-21 20:42:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:42:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:42:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:42:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:42:59,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207606012] [2020-08-21 20:42:59,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:42:59,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 20:42:59,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81860398] [2020-08-21 20:42:59,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 20:42:59,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:42:59,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 20:42:59,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:42:59,983 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 15 states. [2020-08-21 20:43:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:00,783 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-21 20:43:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:43:00,784 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-08-21 20:43:00,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:00,785 INFO L225 Difference]: With dead ends: 37 [2020-08-21 20:43:00,786 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 20:43:00,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-08-21 20:43:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 20:43:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-08-21 20:43:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 20:43:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-21 20:43:00,799 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-08-21 20:43:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:00,801 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-21 20:43:00,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 20:43:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-21 20:43:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 20:43:00,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:00,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:43:00,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:43:00,804 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:00,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 2 times [2020-08-21 20:43:00,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:00,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010970145] [2020-08-21 20:43:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:00,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:43:00,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010970145] [2020-08-21 20:43:00,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:43:00,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 20:43:00,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840303328] [2020-08-21 20:43:00,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:43:01,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:01,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:43:01,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:43:01,001 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-08-21 20:43:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:03,238 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-21 20:43:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 20:43:03,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-21 20:43:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:03,239 INFO L225 Difference]: With dead ends: 41 [2020-08-21 20:43:03,240 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 20:43:03,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:43:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 20:43:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-21 20:43:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-21 20:43:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-21 20:43:03,250 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2020-08-21 20:43:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:03,250 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-21 20:43:03,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:43:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-21 20:43:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 20:43:03,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:03,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:43:03,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:43:03,252 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1961236154, now seen corresponding path program 1 times [2020-08-21 20:43:03,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:03,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321355408] [2020-08-21 20:43:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:43:03,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321355408] [2020-08-21 20:43:03,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:43:03,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 20:43:03,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153821081] [2020-08-21 20:43:03,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:43:03,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:03,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:43:03,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:43:03,373 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-08-21 20:43:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:03,497 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-08-21 20:43:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 20:43:03,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-21 20:43:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:03,498 INFO L225 Difference]: With dead ends: 44 [2020-08-21 20:43:03,498 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 20:43:03,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:43:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 20:43:03,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-08-21 20:43:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 20:43:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-21 20:43:03,504 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-08-21 20:43:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:03,505 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-21 20:43:03,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:43:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-21 20:43:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 20:43:03,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:03,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:43:03,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:43:03,506 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:03,507 INFO L82 PathProgramCache]: Analyzing trace with hash -230662155, now seen corresponding path program 1 times [2020-08-21 20:43:03,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:03,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341417677] [2020-08-21 20:43:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:43:07,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341417677] [2020-08-21 20:43:07,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:43:07,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 20:43:07,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115434394] [2020-08-21 20:43:07,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:43:07,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:07,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:43:07,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-08-21 20:43:07,857 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-08-21 20:43:09,996 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2020-08-21 20:43:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:22,562 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-21 20:43:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 20:43:22,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-21 20:43:22,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:22,564 INFO L225 Difference]: With dead ends: 44 [2020-08-21 20:43:22,564 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 20:43:22,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=26, Invalid=61, Unknown=3, NotChecked=0, Total=90 [2020-08-21 20:43:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 20:43:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-08-21 20:43:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 20:43:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-21 20:43:22,571 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2020-08-21 20:43:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:22,571 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-21 20:43:22,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:43:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-21 20:43:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 20:43:22,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:43:22,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:43:22,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:43:22,581 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:43:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:43:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-08-21 20:43:22,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:43:22,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940135690] [2020-08-21 20:43:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:43:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:43:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:43:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 20:43:22,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940135690] [2020-08-21 20:43:22,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:43:22,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:43:22,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13927265] [2020-08-21 20:43:22,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:43:22,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:43:22,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:43:22,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:43:22,778 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-08-21 20:43:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:43:22,896 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-21 20:43:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 20:43:22,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-21 20:43:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:43:22,897 INFO L225 Difference]: With dead ends: 31 [2020-08-21 20:43:22,898 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 20:43:22,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:43:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 20:43:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 20:43:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 20:43:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 20:43:22,899 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-21 20:43:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:43:22,900 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 20:43:22,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:43:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 20:43:22,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 20:43:22,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 20:43:22,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 20:43:23,041 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 20:43:23,042 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-21 20:43:23,042 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 20:43:23,042 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 20:43:23,042 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-21 20:43:23,042 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 20:43:23,042 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 20:43:23,042 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-21 20:43:23,042 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-21 20:43:23,043 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-21 20:43:23,043 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-21 20:43:23,043 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-21 20:43:23,043 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-08-21 20:43:23,043 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-08-21 20:43:23,043 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-08-21 20:43:23,043 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-08-21 20:43:23,044 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-08-21 20:43:23,044 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-08-21 20:43:23,044 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-21 20:43:23,044 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296)))) (.cse0 (* 4294967296 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0) 4294967296)))) (and (<= (+ main_~l~0 .cse0) .cse1) (< .cse1 (+ main_~l~0 .cse0 1)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-21 20:43:23,044 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-08-21 20:43:23,045 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-08-21 20:43:23,045 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-21 20:43:23,045 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-21 20:43:23,045 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-21 20:43:23,045 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-21 20:43:23,045 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-21 20:43:23,045 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-21 20:43:23,046 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-21 20:43:23,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:43:23 BoogieIcfgContainer [2020-08-21 20:43:23,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:43:23,065 INFO L168 Benchmark]: Toolchain (without parser) took 36733.81 ms. Allocated memory was 147.3 MB in the beginning and 271.1 MB in the end (delta: 123.7 MB). Free memory was 103.5 MB in the beginning and 205.2 MB in the end (delta: -101.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:43:23,066 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 20:43:23,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.24 ms. Allocated memory is still 147.3 MB. Free memory was 103.3 MB in the beginning and 93.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-21 20:43:23,068 INFO L168 Benchmark]: Boogie Preprocessor took 116.56 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 93.4 MB in the beginning and 181.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-21 20:43:23,069 INFO L168 Benchmark]: RCFGBuilder took 313.53 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 166.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-08-21 20:43:23,070 INFO L168 Benchmark]: TraceAbstraction took 36060.44 ms. Allocated memory was 202.9 MB in the beginning and 271.1 MB in the end (delta: 68.2 MB). Free memory was 165.8 MB in the beginning and 205.2 MB in the end (delta: -39.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-08-21 20:43:23,073 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.24 ms. Allocated memory is still 147.3 MB. Free memory was 103.3 MB in the beginning and 93.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.56 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 93.4 MB in the beginning and 181.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 313.53 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 166.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36060.44 ms. Allocated memory was 202.9 MB in the beginning and 271.1 MB in the end (delta: 68.2 MB). Free memory was 165.8 MB in the beginning and 205.2 MB in the end (delta: -39.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: ((l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 35.8s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 27.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 511 SDslu, 243 SDs, 0 SdLazy, 789 SolverSat, 128 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=11, 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, 12 MinimizatonAttempts, 27 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 27 NumberOfFragments, 98 HoareAnnotationTreeSize, 19 FomulaSimplifications, 533 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 52122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 42/80 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...