/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=BIGGEST --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 17:29:16,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:29:16,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:29:16,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:29:16,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:29:16,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:29:16,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:29:16,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:29:16,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:29:16,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:29:16,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:29:16,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:29:16,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:29:16,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:29:16,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:29:16,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:29:16,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:29:16,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:29:16,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:29:16,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:29:16,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:29:16,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:29:16,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:29:16,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:29:16,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:29:16,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:29:16,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:29:17,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:29:17,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:29:17,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:29:17,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:29:17,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:29:17,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:29:17,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:29:17,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:29:17,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:29:17,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:29:17,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:29:17,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:29:17,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:29:17,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:29:17,013 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 17:29:17,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:29:17,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:29:17,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:29:17,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:29:17,065 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:29:17,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:29:17,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:29:17,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:29:17,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:29:17,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:29:17,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:29:17,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:29:17,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:29:17,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:29:17,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:29:17,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:29:17,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:29:17,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:29:17,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:29:17,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:29:17,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:29:17,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:29:17,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:29:17,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:29:17,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:29:17,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:29:17,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:29:17,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:29:17,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:29:17,072 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=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:29:17,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:29:17,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:29:17,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:29:17,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:29:17,383 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:29:17,384 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-21 17:29:17,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1afdc7173/837e24c9446145018466d0bdb93361d6/FLAGd44a6dbd1 [2020-08-21 17:29:17,913 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:29:17,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-21 17:29:17,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1afdc7173/837e24c9446145018466d0bdb93361d6/FLAGd44a6dbd1 [2020-08-21 17:29:18,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1afdc7173/837e24c9446145018466d0bdb93361d6 [2020-08-21 17:29:18,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:29:18,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:29:18,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:29:18,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:29:18,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:29:18,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1392f113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18, skipping insertion in model container [2020-08-21 17:29:18,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:29:18,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:29:18,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:29:18,529 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:29:18,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:29:18,563 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:29:18,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18 WrapperNode [2020-08-21 17:29:18,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:29:18,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:29:18,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:29:18,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:29:18,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (1/1) ... [2020-08-21 17:29:18,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:29:18,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:29:18,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:29:18,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:29:18,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (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 17:29:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:29:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:29:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 17:29:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 17:29:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:29:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:29:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 17:29:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 17:29:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 17:29:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:29:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:29:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:29:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:29:18,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:29:18,996 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 17:29:19,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:29:19 BoogieIcfgContainer [2020-08-21 17:29:19,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:29:19,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:29:19,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:29:19,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:29:19,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:29:18" (1/3) ... [2020-08-21 17:29:19,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4370a1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:29:19, skipping insertion in model container [2020-08-21 17:29:19,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:18" (2/3) ... [2020-08-21 17:29:19,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4370a1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:29:19, skipping insertion in model container [2020-08-21 17:29:19,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:29:19" (3/3) ... [2020-08-21 17:29:19,009 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-08-21 17:29:19,020 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:29:19,027 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:29:19,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:29:19,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:29:19,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:29:19,078 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:29:19,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:29:19,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:29:19,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:29:19,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:29:19,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:29:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-21 17:29:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 17:29:19,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:19,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:19,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-08-21 17:29:19,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:19,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726398128] [2020-08-21 17:29:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:19,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:19,302 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 17:29:19,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726398128] [2020-08-21 17:29:19,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:19,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:29:19,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552073214] [2020-08-21 17:29:19,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:29:19,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:19,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:29:19,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:29:19,331 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-08-21 17:29:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:19,386 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-21 17:29:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:29:19,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-21 17:29:19,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:19,401 INFO L225 Difference]: With dead ends: 37 [2020-08-21 17:29:19,401 INFO L226 Difference]: Without dead ends: 18 [2020-08-21 17:29:19,405 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 17:29:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-21 17:29:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-21 17:29:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-21 17:29:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-08-21 17:29:19,450 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-08-21 17:29:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:19,450 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-08-21 17:29:19,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:29:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-08-21 17:29:19,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 17:29:19,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:19,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:19,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:29:19,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:19,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-08-21 17:29:19,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:19,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052707167] [2020-08-21 17:29:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:19,851 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 17:29:19,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052707167] [2020-08-21 17:29:19,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:19,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:29:19,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338491179] [2020-08-21 17:29:19,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:29:19,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:19,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:29:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:29:19,856 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2020-08-21 17:29:24,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:24,231 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-08-21 17:29:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:29:24,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-21 17:29:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:24,235 INFO L225 Difference]: With dead ends: 26 [2020-08-21 17:29:24,235 INFO L226 Difference]: Without dead ends: 21 [2020-08-21 17:29:24,236 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 17:29:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-21 17:29:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-08-21 17:29:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 17:29:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-08-21 17:29:24,248 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-08-21 17:29:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:24,249 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-08-21 17:29:24,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:29:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-08-21 17:29:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 17:29:24,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:24,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:24,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:29:24,252 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:24,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:24,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-08-21 17:29:24,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:24,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802667673] [2020-08-21 17:29:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:24,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:24,970 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 17:29:24,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802667673] [2020-08-21 17:29:24,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:24,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 17:29:24,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873714733] [2020-08-21 17:29:24,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:29:24,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:24,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:29:24,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:29:24,973 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 13 states. [2020-08-21 17:29:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:25,490 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-21 17:29:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:29:25,491 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-08-21 17:29:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:25,492 INFO L225 Difference]: With dead ends: 40 [2020-08-21 17:29:25,492 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 17:29:25,494 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 17:29:25,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 17:29:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-08-21 17:29:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-21 17:29:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-21 17:29:25,500 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-21 17:29:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:25,501 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-21 17:29:25,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:29:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-21 17:29:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 17:29:25,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:25,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:25,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:29:25,503 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:25,503 INFO L82 PathProgramCache]: Analyzing trace with hash -162414684, now seen corresponding path program 2 times [2020-08-21 17:29:25,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:25,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927491635] [2020-08-21 17:29:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:25,869 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 17:29:25,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927491635] [2020-08-21 17:29:25,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:25,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 17:29:25,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803747713] [2020-08-21 17:29:25,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:29:25,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:25,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:29:25,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:29:25,876 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-08-21 17:29:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:26,198 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-08-21 17:29:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:29:26,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-21 17:29:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:26,200 INFO L225 Difference]: With dead ends: 38 [2020-08-21 17:29:26,200 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 17:29:26,201 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 17:29:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 17:29:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-08-21 17:29:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-21 17:29:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-21 17:29:26,211 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-08-21 17:29:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:26,211 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-21 17:29:26,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:29:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-21 17:29:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 17:29:26,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:26,214 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 17:29:26,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:29:26,215 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:26,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:26,215 INFO L82 PathProgramCache]: Analyzing trace with hash -444322542, now seen corresponding path program 1 times [2020-08-21 17:29:26,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:26,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983165685] [2020-08-21 17:29:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:26,356 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 17:29:26,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983165685] [2020-08-21 17:29:26,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:26,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 17:29:26,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329496146] [2020-08-21 17:29:26,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:29:26,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:26,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:29:26,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:29:26,359 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-08-21 17:29:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:26,450 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-21 17:29:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:29:26,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-21 17:29:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:26,452 INFO L225 Difference]: With dead ends: 38 [2020-08-21 17:29:26,452 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 17:29:26,453 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 17:29:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 17:29:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-08-21 17:29:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 17:29:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-21 17:29:26,459 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2020-08-21 17:29:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:26,459 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-21 17:29:26,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:29:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-21 17:29:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 17:29:26,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:26,460 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 17:29:26,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:29:26,461 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash -450980439, now seen corresponding path program 1 times [2020-08-21 17:29:26,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:26,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258313908] [2020-08-21 17:29:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:26,770 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 17:29:26,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258313908] [2020-08-21 17:29:26,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:26,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 17:29:26,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352857669] [2020-08-21 17:29:26,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:29:26,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:26,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:29:26,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:29:26,776 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-08-21 17:29:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:26,987 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-08-21 17:29:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:29:26,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-21 17:29:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:26,990 INFO L225 Difference]: With dead ends: 37 [2020-08-21 17:29:26,990 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 17:29:26,991 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 17:29:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 17:29:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-21 17:29:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 17:29:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-08-21 17:29:26,997 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-08-21 17:29:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:26,997 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-08-21 17:29:26,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:29:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-08-21 17:29:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 17:29:26,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:26,999 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 17:29:26,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:29:26,999 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:27,000 INFO L82 PathProgramCache]: Analyzing trace with hash -514824137, now seen corresponding path program 1 times [2020-08-21 17:29:27,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:27,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189848860] [2020-08-21 17:29:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:27,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:27,095 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 17:29:27,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189848860] [2020-08-21 17:29:27,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:27,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 17:29:27,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400446978] [2020-08-21 17:29:27,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:29:27,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:27,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:29:27,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:29:27,098 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-08-21 17:29:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:27,200 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-21 17:29:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:29:27,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 17:29:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:27,201 INFO L225 Difference]: With dead ends: 38 [2020-08-21 17:29:27,201 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 17:29:27,202 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 17:29:27,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 17:29:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-08-21 17:29:27,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-21 17:29:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-21 17:29:27,207 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-08-21 17:29:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:27,208 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-21 17:29:27,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:29:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-21 17:29:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 17:29:27,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:27,209 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 17:29:27,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:29:27,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:27,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-08-21 17:29:27,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:27,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097408208] [2020-08-21 17:29:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:27,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:27,902 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 17:29:27,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097408208] [2020-08-21 17:29:27,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:27,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 17:29:27,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699001819] [2020-08-21 17:29:27,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 17:29:27,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:27,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 17:29:27,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:29:27,906 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 15 states. [2020-08-21 17:29:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:28,584 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-21 17:29:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:29:28,587 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-08-21 17:29:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:28,588 INFO L225 Difference]: With dead ends: 37 [2020-08-21 17:29:28,588 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 17:29:28,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-08-21 17:29:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 17:29:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-08-21 17:29:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 17:29:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-21 17:29:28,599 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-08-21 17:29:28,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:28,601 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-21 17:29:28,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 17:29:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-21 17:29:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 17:29:28,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:28,602 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 17:29:28,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:29:28,603 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:28,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 2 times [2020-08-21 17:29:28,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:28,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635340045] [2020-08-21 17:29:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:28,782 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 17:29:28,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635340045] [2020-08-21 17:29:28,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:28,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 17:29:28,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456745955] [2020-08-21 17:29:28,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:29:28,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:28,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:29:28,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:29:28,785 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-08-21 17:29:31,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:31,033 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-21 17:29:31,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:29:31,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-21 17:29:31,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:31,034 INFO L225 Difference]: With dead ends: 41 [2020-08-21 17:29:31,034 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 17:29:31,035 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 17:29:31,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 17:29:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-21 17:29:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-21 17:29:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-21 17:29:31,041 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2020-08-21 17:29:31,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:31,041 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-21 17:29:31,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:29:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-21 17:29:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 17:29:31,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:31,043 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 17:29:31,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:29:31,043 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1961236154, now seen corresponding path program 1 times [2020-08-21 17:29:31,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:31,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615234421] [2020-08-21 17:29:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:31,156 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 17:29:31,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615234421] [2020-08-21 17:29:31,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:31,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 17:29:31,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821414831] [2020-08-21 17:29:31,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:29:31,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:31,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:29:31,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:29:31,158 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-08-21 17:29:31,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:31,280 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-08-21 17:29:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:29:31,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-21 17:29:31,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:31,282 INFO L225 Difference]: With dead ends: 44 [2020-08-21 17:29:31,282 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 17:29:31,282 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 17:29:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 17:29:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-08-21 17:29:31,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 17:29:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-21 17:29:31,288 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-08-21 17:29:31,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:31,288 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-21 17:29:31,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:29:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-21 17:29:31,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 17:29:31,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:31,290 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 17:29:31,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:29:31,290 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:31,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:31,290 INFO L82 PathProgramCache]: Analyzing trace with hash -230662155, now seen corresponding path program 1 times [2020-08-21 17:29:31,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:31,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778219916] [2020-08-21 17:29:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:32,903 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 17:29:32,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778219916] [2020-08-21 17:29:32,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:29:32,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 17:29:32,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362354544] [2020-08-21 17:29:32,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:29:32,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:32,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:29:32,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:29:32,905 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-08-21 17:29:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:43,431 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-21 17:29:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:29:43,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-21 17:29:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:43,436 INFO L225 Difference]: With dead ends: 44 [2020-08-21 17:29:43,436 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 17:29:43,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2020-08-21 17:29:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 17:29:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-08-21 17:29:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 17:29:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-21 17:29:43,449 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2020-08-21 17:29:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:43,449 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-21 17:29:43,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:29:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-21 17:29:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 17:29:43,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:43,451 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 17:29:43,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:29:43,451 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:43,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:43,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-08-21 17:29:43,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:43,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549222154] [2020-08-21 17:29:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,584 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 17:29:43,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549222154] [2020-08-21 17:29:43,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:43,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:29:43,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909330151] [2020-08-21 17:29:43,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:29:43,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:43,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:29:43,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:29:43,587 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-08-21 17:29:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:43,702 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-21 17:29:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:29:43,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-21 17:29:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:43,703 INFO L225 Difference]: With dead ends: 31 [2020-08-21 17:29:43,704 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:29:43,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:29:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:29:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:29:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:29:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:29:43,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-21 17:29:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:43,706 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:29:43,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:29:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:29:43,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:29:43,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 17:29:43,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:29:43,845 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:29:43,846 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-21 17:29:43,846 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:29:43,846 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:29:43,846 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-21 17:29:43,847 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 17:29:43,847 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:29:43,847 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-21 17:29:43,847 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-21 17:29:43,847 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-21 17:29:43,847 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-21 17:29:43,847 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-21 17:29:43,848 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-08-21 17:29:43,848 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-08-21 17:29:43,848 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-08-21 17:29:43,848 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-08-21 17:29:43,848 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-08-21 17:29:43,848 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-08-21 17:29:43,849 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 17:29:43,849 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 17:29:43,849 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-08-21 17:29:43,849 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-08-21 17:29:43,849 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-21 17:29:43,849 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-21 17:29:43,850 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-21 17:29:43,850 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-21 17:29:43,850 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-21 17:29:43,850 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-21 17:29:43,850 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-21 17:29:43,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:29:43 BoogieIcfgContainer [2020-08-21 17:29:43,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:29:43,874 INFO L168 Benchmark]: Toolchain (without parser) took 25544.49 ms. Allocated memory was 147.8 MB in the beginning and 267.4 MB in the end (delta: 119.5 MB). Free memory was 102.9 MB in the beginning and 186.1 MB in the end (delta: -83.2 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:43,875 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 17:29:43,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.74 ms. Allocated memory is still 147.8 MB. Free memory was 102.5 MB in the beginning and 92.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:43,877 INFO L168 Benchmark]: Boogie Preprocessor took 123.33 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 92.7 MB in the beginning and 181.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:43,877 INFO L168 Benchmark]: RCFGBuilder took 311.89 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 167.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:43,878 INFO L168 Benchmark]: TraceAbstraction took 24869.45 ms. Allocated memory was 203.9 MB in the beginning and 267.4 MB in the end (delta: 63.4 MB). Free memory was 167.0 MB in the beginning and 186.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:43,883 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 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.74 ms. Allocated memory is still 147.8 MB. Free memory was 102.5 MB in the beginning and 92.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.33 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 92.7 MB in the beginning and 181.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.89 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 167.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24869.45 ms. Allocated memory was 203.9 MB in the beginning and 267.4 MB in the end (delta: 63.4 MB). Free memory was 167.0 MB in the beginning and 186.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 44.3 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: 24.6s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 508 SDslu, 239 SDs, 0 SdLazy, 757 SolverSat, 129 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 15.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 6.7s 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: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 25 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 27 NumberOfFragments, 98 HoareAnnotationTreeSize, 19 FomulaSimplifications, 530 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.3s 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...