/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:11:31,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:11:31,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:11:32,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:11:32,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:11:32,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:11:32,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:11:32,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:11:32,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:11:32,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:11:32,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:11:32,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:11:32,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:11:32,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:11:32,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:11:32,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:11:32,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:11:32,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:11:32,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:11:32,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:11:32,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:11:32,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:11:32,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:11:32,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:11:32,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:11:32,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:11:32,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:11:32,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:11:32,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:11:32,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:11:32,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:11:32,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:11:32,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:11:32,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:11:32,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:11:32,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:11:32,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:11:32,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:11:32,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:11:32,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:11:32,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:11:32,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:11:32,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:11:32,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:11:32,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:11:32,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:11:32,142 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:11:32,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:11:32,142 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:11:32,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:11:32,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:11:32,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:11:32,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:11:32,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:11:32,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:11:32,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:11:32,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:11:32,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:11:32,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:11:32,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:11:32,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:11:32,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:11:32,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:11:32,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:11:32,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:11:32,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:11:32,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:11:32,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:11:32,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:11:32,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:11:32,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:11:32,154 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:11:32,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:11:32,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:11:32,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:11:32,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:11:32,648 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:11:32,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-24 16:11:32,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3966e9ceb/6b099277406a4e73831fac72db9796c8/FLAGdc9ee049f [2020-09-24 16:11:33,297 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:11:33,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-24 16:11:33,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3966e9ceb/6b099277406a4e73831fac72db9796c8/FLAGdc9ee049f [2020-09-24 16:11:33,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3966e9ceb/6b099277406a4e73831fac72db9796c8 [2020-09-24 16:11:33,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:11:33,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:11:33,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:33,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:11:33,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:11:33,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:33,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4649669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33, skipping insertion in model container [2020-09-24 16:11:33,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:33,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:11:33,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:11:33,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:33,941 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:11:33,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:33,976 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:11:33,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33 WrapperNode [2020-09-24 16:11:33,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:33,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:11:33,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:11:33,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:11:33,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:33,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:34,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:34,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:34,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:34,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:34,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (1/1) ... [2020-09-24 16:11:34,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:11:34,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:11:34,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:11:34,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:11:34,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:11:34,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:11:34,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:11:34,162 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:11:34,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:11:34,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:11:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:11:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:11:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:11:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:11:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:11:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:11:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:11:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:11:34,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:11:34,557 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:11:34,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:34 BoogieIcfgContainer [2020-09-24 16:11:34,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:11:34,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:11:34,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:11:34,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:11:34,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:11:33" (1/3) ... [2020-09-24 16:11:34,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccdf659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:34, skipping insertion in model container [2020-09-24 16:11:34,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:33" (2/3) ... [2020-09-24 16:11:34,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccdf659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:34, skipping insertion in model container [2020-09-24 16:11:34,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:34" (3/3) ... [2020-09-24 16:11:34,571 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-09-24 16:11:34,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:11:34,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:11:34,613 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:11:34,642 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:11:34,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:11:34,643 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:11:34,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:11:34,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:11:34,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:11:34,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:11:34,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:11:34,663 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 16:11:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 16:11:34,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:34,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:34,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:34,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1686675663, now seen corresponding path program 1 times [2020-09-24 16:11:34,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:34,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813483612] [2020-09-24 16:11:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:34,804 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:34,805 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:34,805 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:34,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:34,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 16:11:34,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:34,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:11:34,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:11:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:34,844 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:34,845 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:34,845 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:34,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:34,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:34,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:34,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:34,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:34,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813483612] [2020-09-24 16:11:34,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:34,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 16:11:34,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091966195] [2020-09-24 16:11:34,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 16:11:34,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:34,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 16:11:34,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:11:34,890 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-09-24 16:11:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:34,921 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-09-24 16:11:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 16:11:34,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-09-24 16:11:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:34,936 INFO L225 Difference]: With dead ends: 57 [2020-09-24 16:11:34,936 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 16:11:34,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:11:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 16:11:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-24 16:11:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 16:11:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-09-24 16:11:34,990 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 22 [2020-09-24 16:11:34,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:34,990 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-09-24 16:11:34,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 16:11:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-09-24 16:11:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 16:11:34,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:34,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:34,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:11:34,993 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash 779060326, now seen corresponding path program 1 times [2020-09-24 16:11:34,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:34,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880777089] [2020-09-24 16:11:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:35,081 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:35,081 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:35,082 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:35,082 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:35,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 16:11:35,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 16:11:35,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:11:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:11:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 16:11:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:35,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:35,369 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:35,369 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:35,369 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:35,370 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:35,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:35,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:35,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:35,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:35,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880777089] [2020-09-24 16:11:35,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:35,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:11:35,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499342294] [2020-09-24 16:11:35,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:11:35,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:11:35,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:11:35,385 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2020-09-24 16:11:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:35,480 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-09-24 16:11:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:11:35,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 16:11:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:35,483 INFO L225 Difference]: With dead ends: 49 [2020-09-24 16:11:35,483 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 16:11:35,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:11:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 16:11:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-24 16:11:35,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 16:11:35,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-24 16:11:35,491 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 24 [2020-09-24 16:11:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:35,492 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-24 16:11:35,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:11:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-24 16:11:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 16:11:35,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:35,494 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:35,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:11:35,494 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:35,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:35,495 INFO L82 PathProgramCache]: Analyzing trace with hash -579098768, now seen corresponding path program 1 times [2020-09-24 16:11:35,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:35,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602285498] [2020-09-24 16:11:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:35,649 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:35,650 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:35,650 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:35,650 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:35,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 16:11:35,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 16:11:35,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:11:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:11:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 16:11:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:35,952 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:35,952 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:35,952 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:35,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:35,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:35,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:35,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:35,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:35,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602285498] [2020-09-24 16:11:35,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:35,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 16:11:35,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392703506] [2020-09-24 16:11:35,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:11:35,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:35,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:11:35,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:11:35,964 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-09-24 16:11:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:36,263 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-09-24 16:11:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:11:36,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 16:11:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:36,265 INFO L225 Difference]: With dead ends: 67 [2020-09-24 16:11:36,266 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 16:11:36,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:11:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 16:11:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-09-24 16:11:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 16:11:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 16:11:36,274 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 34 [2020-09-24 16:11:36,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:36,275 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 16:11:36,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:11:36,275 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 16:11:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 16:11:36,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:36,277 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:36,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:11:36,277 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:36,277 INFO L82 PathProgramCache]: Analyzing trace with hash -44019760, now seen corresponding path program 1 times [2020-09-24 16:11:36,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:36,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179920102] [2020-09-24 16:11:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:36,297 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:36,297 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:36,297 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:36,297 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:36,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 16:11:36,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:36,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:11:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 16:11:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:36,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:36,322 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:36,322 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:36,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:36,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:36,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:36,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:36,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:36,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:11:36,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179920102] [2020-09-24 16:11:36,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:36,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:11:36,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649870449] [2020-09-24 16:11:36,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:11:36,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:36,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:11:36,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:11:36,331 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 3 states. [2020-09-24 16:11:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:36,340 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-09-24 16:11:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:11:36,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-24 16:11:36,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:36,341 INFO L225 Difference]: With dead ends: 74 [2020-09-24 16:11:36,342 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 16:11:36,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:11:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 16:11:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 16:11:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 16:11:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-24 16:11:36,348 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 34 [2020-09-24 16:11:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:36,349 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-24 16:11:36,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:11:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-24 16:11:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 16:11:36,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:36,351 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:36,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:11:36,351 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:36,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1122436602, now seen corresponding path program 2 times [2020-09-24 16:11:36,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:36,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306708694] [2020-09-24 16:11:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:36,476 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:36,476 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:36,477 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:36,477 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:36,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 16:11:36,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:36,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 16:11:36,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:11:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:11:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:11:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:37,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:37,122 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:37,122 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:37,122 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:37,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:37,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:37,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:37,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:37,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306708694] [2020-09-24 16:11:37,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:37,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 16:11:37,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543625531] [2020-09-24 16:11:37,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 16:11:37,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:37,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 16:11:37,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:11:37,139 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 16 states. [2020-09-24 16:11:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:37,633 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-09-24 16:11:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:11:37,634 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-09-24 16:11:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:37,635 INFO L225 Difference]: With dead ends: 76 [2020-09-24 16:11:37,635 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 16:11:37,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-09-24 16:11:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 16:11:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-09-24 16:11:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 16:11:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-09-24 16:11:37,656 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 44 [2020-09-24 16:11:37,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:37,657 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-09-24 16:11:37,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 16:11:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-09-24 16:11:37,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 16:11:37,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:37,659 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:37,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:11:37,661 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:37,662 INFO L82 PathProgramCache]: Analyzing trace with hash 937303643, now seen corresponding path program 1 times [2020-09-24 16:11:37,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:37,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474281004] [2020-09-24 16:11:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:37,715 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:37,715 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:37,715 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:37,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:37,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 16:11:37,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:37,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:11:37,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:11:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 16:11:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:11:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:37,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:37,861 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:37,863 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:37,863 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:37,867 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:37,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:37,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:37,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:11:37,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:11:37,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474281004] [2020-09-24 16:11:37,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:37,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:11:37,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659850218] [2020-09-24 16:11:37,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:11:37,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:37,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:11:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:11:37,881 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 4 states. [2020-09-24 16:11:37,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:37,905 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2020-09-24 16:11:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:11:37,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 16:11:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:37,910 INFO L225 Difference]: With dead ends: 80 [2020-09-24 16:11:37,911 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 16:11:37,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:11:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 16:11:37,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 16:11:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 16:11:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-09-24 16:11:37,923 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 46 [2020-09-24 16:11:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:37,923 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-09-24 16:11:37,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:11:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-09-24 16:11:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 16:11:37,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:37,926 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:37,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:11:37,927 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:37,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1534935044, now seen corresponding path program 3 times [2020-09-24 16:11:37,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:37,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145914424] [2020-09-24 16:11:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:38,054 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:38,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:38,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:38,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:38,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 16:11:38,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:38,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 16:11:38,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 16:11:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:11:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 16:11:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:38,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:38,772 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:38,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:38,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:38,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:38,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:38,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:38,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:38,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145914424] [2020-09-24 16:11:38,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:38,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 16:11:38,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365526332] [2020-09-24 16:11:38,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 16:11:38,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:38,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 16:11:38,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:11:38,792 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 19 states. [2020-09-24 16:11:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:39,633 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-24 16:11:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:11:39,634 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-09-24 16:11:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:39,634 INFO L225 Difference]: With dead ends: 55 [2020-09-24 16:11:39,634 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:11:39,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 16:11:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:11:39,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:11:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:11:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:11:39,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-09-24 16:11:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:39,639 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:11:39,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 16:11:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:11:39,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:11:39,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:11:39,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:11:39,689 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:11:39,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:39,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:39,690 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:11:39,690 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:11:39,690 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:11:39,690 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:39,690 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:39,690 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 16:11:39,690 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 16:11:39,691 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:39,691 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 16:11:39,691 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 16:11:39,691 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 16:11:39,691 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 16:11:39,691 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 38) no Hoare annotation was computed. [2020-09-24 16:11:39,692 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-09-24 16:11:39,692 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 16:11:39,692 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 16:11:39,692 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 16:11:39,692 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-24 16:11:39,692 INFO L268 CegarLoopResult]: For program point L28-2(lines 13 38) no Hoare annotation was computed. [2020-09-24 16:11:39,692 INFO L268 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-09-24 16:11:39,693 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 16:11:39,693 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-24 16:11:39,693 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 16:11:39,693 INFO L268 CegarLoopResult]: For program point L24-4(lines 13 38) no Hoare annotation was computed. [2020-09-24 16:11:39,693 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:11:39,693 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 16:11:39,694 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 16:11:39,694 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 16:11:39,694 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 16:11:39,694 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 16:11:39,694 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 38) no Hoare annotation was computed. [2020-09-24 16:11:39,694 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-24 16:11:39,695 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 38) the Hoare annotation is: true [2020-09-24 16:11:39,695 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 16:11:39,695 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 16:11:39,695 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:11:39,695 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 16:11:39,695 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 16:11:39,695 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 16:11:39,696 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (= (+ (* (div main_~a~0 4294967296) 4294967296) main_~b~0) (+ (* (div main_~b~0 4294967296) 4294967296) main_~a~0)) [2020-09-24 16:11:39,696 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 16:11:39,696 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:39,696 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 16:11:39,696 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 16:11:39,697 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:39,697 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 16:11:39,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:11:39 BoogieIcfgContainer [2020-09-24 16:11:39,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:11:39,708 INFO L168 Benchmark]: Toolchain (without parser) took 6073.28 ms. Allocated memory was 139.5 MB in the beginning and 281.0 MB in the end (delta: 141.6 MB). Free memory was 101.6 MB in the beginning and 200.6 MB in the end (delta: -99.0 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:39,709 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:11:39,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.23 ms. Allocated memory is still 139.5 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:39,711 INFO L168 Benchmark]: Boogie Preprocessor took 110.40 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:39,711 INFO L168 Benchmark]: RCFGBuilder took 472.77 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 165.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:39,712 INFO L168 Benchmark]: TraceAbstraction took 5141.41 ms. Allocated memory was 201.9 MB in the beginning and 281.0 MB in the end (delta: 79.2 MB). Free memory was 165.1 MB in the beginning and 200.6 MB in the end (delta: -35.5 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:39,716 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.23 ms. Allocated memory is still 139.5 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.40 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 472.77 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 165.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5141.41 ms. Allocated memory was 201.9 MB in the beginning and 281.0 MB in the end (delta: 79.2 MB). Free memory was 165.1 MB in the beginning and 200.6 MB in the end (delta: -35.5 MB). Peak memory consumption was 43.7 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 262 SDtfs, 189 SDslu, 963 SDs, 0 SdLazy, 518 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=5, 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, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 12 PreInvPairs, 16 NumberOfFragments, 20 HoareAnnotationTreeSize, 12 FomulaSimplifications, 49 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 110004 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 15/67 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...