/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 12:18:58,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 12:18:58,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 12:18:58,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 12:18:58,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 12:18:58,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 12:18:58,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 12:18:58,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 12:18:58,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 12:18:58,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 12:18:58,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 12:18:58,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 12:18:58,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 12:18:58,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 12:18:58,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 12:18:58,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 12:18:58,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 12:18:58,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 12:18:58,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 12:18:58,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 12:18:58,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 12:18:58,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 12:18:58,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 12:18:58,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 12:18:58,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 12:18:58,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 12:18:58,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 12:18:58,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 12:18:58,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 12:18:58,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 12:18:58,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 12:18:58,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 12:18:58,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 12:18:58,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 12:18:58,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 12:18:58,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 12:18:58,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 12:18:58,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 12:18:58,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 12:18:58,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 12:18:58,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 12:18:58,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 12:18:58,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 12:18:58,752 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 12:18:58,752 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 12:18:59,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 12:18:59,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 12:18:59,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 12:18:59,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 12:18:59,048 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 12:18:59,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i [2021-05-06 12:18:59,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/515128a2f/1a48696e3a8b4a08ae4d24864b68b97c/FLAG53e1c54e4 [2021-05-06 12:18:59,492 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 12:18:59,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i [2021-05-06 12:18:59,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/515128a2f/1a48696e3a8b4a08ae4d24864b68b97c/FLAG53e1c54e4 [2021-05-06 12:18:59,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/515128a2f/1a48696e3a8b4a08ae4d24864b68b97c [2021-05-06 12:18:59,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 12:18:59,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 12:18:59,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 12:18:59,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 12:18:59,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 12:18:59,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8df1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59, skipping insertion in model container [2021-05-06 12:18:59,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 12:18:59,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 12:18:59,645 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-05-06 12:18:59,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 12:18:59,658 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 12:18:59,673 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-05-06 12:18:59,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 12:18:59,696 INFO L208 MainTranslator]: Completed translation [2021-05-06 12:18:59,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59 WrapperNode [2021-05-06 12:18:59,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 12:18:59,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 12:18:59,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 12:18:59,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 12:18:59,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (1/1) ... [2021-05-06 12:18:59,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 12:18:59,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 12:18:59,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 12:18:59,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 12:18:59,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-06 12:18:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 12:18:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 12:18:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 12:18:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 12:18:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 12:18:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 12:18:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 12:18:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 12:18:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 12:18:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 12:18:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 12:18:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 12:18:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 12:18:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 12:18:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 12:18:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 12:18:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 12:18:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 12:18:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 12:18:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 12:18:59,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 12:18:59,973 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 12:18:59,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:18:59 BoogieIcfgContainer [2021-05-06 12:18:59,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 12:18:59,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 12:18:59,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 12:18:59,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 12:18:59,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 12:18:59" (1/3) ... [2021-05-06 12:18:59,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393af80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:18:59, skipping insertion in model container [2021-05-06 12:18:59,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:59" (2/3) ... [2021-05-06 12:18:59,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393af80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:18:59, skipping insertion in model container [2021-05-06 12:18:59,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:18:59" (3/3) ... [2021-05-06 12:18:59,979 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2021-05-06 12:18:59,982 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 12:18:59,984 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 12:18:59,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 12:19:00,006 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 12:19:00,006 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 12:19:00,006 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 12:19:00,006 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 12:19:00,006 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 12:19:00,006 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 12:19:00,006 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 12:19:00,006 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 12:19:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 12:19:00,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 12:19:00,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:19:00,019 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:19:00,019 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:19:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:19:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1005951186, now seen corresponding path program 1 times [2021-05-06 12:19:00,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:19:00,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285241816] [2021-05-06 12:19:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:19:00,062 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 12:19:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:19:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 12:19:00,178 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:19:00,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285241816] [2021-05-06 12:19:00,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [285241816] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:19:00,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:19:00,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 12:19:00,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161695771] [2021-05-06 12:19:00,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 12:19:00,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:19:00,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 12:19:00,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 12:19:00,192 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:19:00,266 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-05-06 12:19:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 12:19:00,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 12:19:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:19:00,271 INFO L225 Difference]: With dead ends: 34 [2021-05-06 12:19:00,271 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 12:19:00,273 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 12:19:00,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 12:19:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-06 12:19:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-06 12:19:00,300 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-06 12:19:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:19:00,300 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-06 12:19:00,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-06 12:19:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 12:19:00,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:19:00,301 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:19:00,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 12:19:00,302 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:19:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:19:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1392462319, now seen corresponding path program 1 times [2021-05-06 12:19:00,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:19:00,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851129156] [2021-05-06 12:19:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:19:00,376 WARN L240 tifierPushTermWalker]: treesize reduction 13, result has 83.1 percent of original size [2021-05-06 12:19:00,383 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 12:19:00,398 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-06 12:19:00,465 WARN L245 tifierPushTermWalker]: treesize reduction 13, result has 83.1 percent of original size 64 [2021-05-06 12:19:00,489 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 12:19:00,493 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 12:19:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:00,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:19:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 12:19:00,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:00,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:00,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:00,777 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:19:00,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851129156] [2021-05-06 12:19:00,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [851129156] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:19:00,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:19:00,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 12:19:00,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887040110] [2021-05-06 12:19:00,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 12:19:00,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:19:00,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 12:19:00,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-05-06 12:19:00,780 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:19:01,053 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-05-06 12:19:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 12:19:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 12:19:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:19:01,055 INFO L225 Difference]: With dead ends: 24 [2021-05-06 12:19:01,055 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 12:19:01,056 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 313.9ms TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-05-06 12:19:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 12:19:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-05-06 12:19:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-06 12:19:01,060 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2021-05-06 12:19:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:19:01,060 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-06 12:19:01,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-06 12:19:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 12:19:01,061 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:19:01,061 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:19:01,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 12:19:01,061 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:19:01,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:19:01,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1449720621, now seen corresponding path program 1 times [2021-05-06 12:19:01,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:19:01,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645127411] [2021-05-06 12:19:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:19:01,067 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 85.7 percent of original size [2021-05-06 12:19:01,079 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 12:19:01,085 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 12:19:01,096 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-06 12:19:01,101 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 12:19:01,110 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 85.7 percent of original size 60 [2021-05-06 12:19:01,122 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 12:19:01,123 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 12:19:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:01,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:19:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 12:19:01,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:01,197 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:19:01,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645127411] [2021-05-06 12:19:01,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [645127411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:19:01,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:19:01,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 12:19:01,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554392265] [2021-05-06 12:19:01,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 12:19:01,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:19:01,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 12:19:01,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-06 12:19:01,199 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:01,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:19:01,257 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-05-06 12:19:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 12:19:01,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 12:19:01,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:19:01,258 INFO L225 Difference]: With dead ends: 25 [2021-05-06 12:19:01,258 INFO L226 Difference]: Without dead ends: 20 [2021-05-06 12:19:01,258 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-06 12:19:01,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-06 12:19:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-06 12:19:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-05-06 12:19:01,263 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2021-05-06 12:19:01,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:19:01,263 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-05-06 12:19:01,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-05-06 12:19:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-06 12:19:01,264 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:19:01,264 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:19:01,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 12:19:01,264 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:19:01,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:19:01,264 INFO L82 PathProgramCache]: Analyzing trace with hash -775235318, now seen corresponding path program 1 times [2021-05-06 12:19:01,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:19:01,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850449006] [2021-05-06 12:19:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:19:01,273 WARN L240 tifierPushTermWalker]: treesize reduction 13, result has 83.1 percent of original size [2021-05-06 12:19:01,275 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 12:19:01,280 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-06 12:19:01,303 WARN L245 tifierPushTermWalker]: treesize reduction 13, result has 83.1 percent of original size 64 [2021-05-06 12:19:01,318 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 12:19:01,323 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 85.7 percent of original size [2021-05-06 12:19:01,334 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 12:19:01,336 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 12:19:01,347 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-06 12:19:01,366 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 12:19:01,376 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 85.7 percent of original size 60 [2021-05-06 12:19:01,387 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 12:19:01,389 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-06 12:19:01,394 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 84.5 percent of original size [2021-05-06 12:19:01,395 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 12:19:01,401 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-06 12:19:01,426 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 84.5 percent of original size 60 [2021-05-06 12:19:01,442 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 12:19:01,443 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-06 12:19:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:19:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 12:19:01,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:01,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:01,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:01,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:01,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:01,688 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:19:01,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850449006] [2021-05-06 12:19:01,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [850449006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:19:01,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:19:01,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-06 12:19:01,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381491816] [2021-05-06 12:19:01,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 12:19:01,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:19:01,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 12:19:01,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-05-06 12:19:01,689 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:19:01,964 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-05-06 12:19:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 12:19:01,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-06 12:19:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:19:01,965 INFO L225 Difference]: With dead ends: 25 [2021-05-06 12:19:01,965 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 12:19:01,965 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 371.3ms TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-05-06 12:19:01,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 12:19:01,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 12:19:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 12:19:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 12:19:01,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-05-06 12:19:01,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:19:01,966 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 12:19:01,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 12:19:01,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 12:19:01,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-06 12:19:01,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 12:19:02,170 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-06 12:19:02,171 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-06 12:19:02,171 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-06 12:19:02,171 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 12:19:02,171 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-06 12:19:02,171 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 12:19:02,171 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 12:19:02,171 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 12:19:02,171 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 12:19:02,171 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 12:19:02,171 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 30) the Hoare annotation is: true [2021-05-06 12:19:02,171 INFO L201 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-05-06 12:19:02,172 INFO L194 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (and (exists ((v_main_~x~0_23 Int) (|v_main_#t~post6_16| Int) (|v_main_#t~post7_11| Int) (|v_main_#t~post6_18| Int) (v_main_~y~0_19 Int)) (and (let ((.cse0 (+ v_main_~x~0_23 1))) (let ((.cse1 (= v_main_~y~0_19 main_~y~0)) (.cse2 (= .cse0 main_~x~0)) (.cse3 (= |v_main_#t~post6_18| |v_main_#t~post6_16|)) (.cse4 (= |main_#t~post7| |v_main_#t~post7_11|))) (or (and (= (+ main_~x~0 v_main_~y~0_19) (+ v_main_~x~0_23 main_~y~0 1)) (< v_main_~y~0_19 .cse0) (< .cse0 main_~x~0)) (and .cse1 (or (<= .cse0 v_main_~y~0_19) (<= main_~n~0 v_main_~x~0_23)) .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse3 .cse4)))) (<= (+ v_main_~y~0_19 1) main_~n~0) (<= v_main_~x~0_23 v_main_~y~0_19))) (<= (+ main_~y~0 1) main_~n~0)) [2021-05-06 12:19:02,172 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 19 30) the Hoare annotation is: true [2021-05-06 12:19:02,172 INFO L194 CegarLoopUtils]: At program point L26-2(lines 24 27) the Hoare annotation is: (exists ((v_main_~x~0_23 Int) (|v_main_#t~post6_16| Int) (|v_main_#t~post7_11| Int) (v_main_~y~0_19 Int)) (and (let ((.cse1 (= v_main_~y~0_19 main_~y~0)) (.cse0 (+ v_main_~x~0_23 1)) (.cse2 (= v_main_~x~0_23 main_~x~0)) (.cse3 (= |main_#t~post6| |v_main_#t~post6_16|)) (.cse4 (= |main_#t~post7| |v_main_#t~post7_11|))) (or (and (< main_~x~0 (+ main_~n~0 1)) (< v_main_~x~0_23 main_~x~0) (= (+ main_~x~0 v_main_~y~0_19) (+ v_main_~x~0_23 main_~y~0)) (< v_main_~y~0_19 .cse0)) (and .cse1 .cse2 .cse3 .cse4) (and .cse1 (or (<= .cse0 v_main_~y~0_19) (<= main_~n~0 v_main_~x~0_23)) .cse2 .cse3 .cse4))) (<= (+ v_main_~y~0_19 1) main_~n~0) (<= v_main_~x~0_23 v_main_~y~0_19))) [2021-05-06 12:19:02,172 INFO L201 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-05-06 12:19:02,172 INFO L194 CegarLoopUtils]: At program point L24-2(lines 24 27) the Hoare annotation is: (and (< main_~x~0 (+ main_~n~0 1)) (< main_~y~0 (+ main_~x~0 1)) (<= main_~n~0 main_~y~0)) [2021-05-06 12:19:02,172 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 19 30) the Hoare annotation is: true [2021-05-06 12:19:02,172 INFO L194 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 12:19:02,172 INFO L194 CegarLoopUtils]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 12:19:02,172 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-06 12:19:02,172 INFO L201 CegarLoopUtils]: At program point L15-2(lines 14 18) the Hoare annotation is: true [2021-05-06 12:19:02,172 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: true [2021-05-06 12:19:02,172 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 12:19:02,178 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,179 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,180 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,180 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] [2021-05-06 12:19:02,180 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] [2021-05-06 12:19:02,180 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,180 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,180 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,184 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,184 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,184 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,184 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] [2021-05-06 12:19:02,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] [2021-05-06 12:19:02,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 12:19:02 BoogieIcfgContainer [2021-05-06 12:19:02,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 12:19:02,187 INFO L168 Benchmark]: Toolchain (without parser) took 2668.69 ms. Allocated memory was 187.7 MB in the beginning and 252.7 MB in the end (delta: 65.0 MB). Free memory was 152.7 MB in the beginning and 203.6 MB in the end (delta: -50.9 MB). Peak memory consumption was 124.0 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:02,187 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 187.7 MB. Free memory is still 169.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 12:19:02,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.80 ms. Allocated memory is still 187.7 MB. Free memory was 152.4 MB in the beginning and 170.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:02,188 INFO L168 Benchmark]: Boogie Preprocessor took 29.73 ms. Allocated memory is still 187.7 MB. Free memory was 170.9 MB in the beginning and 169.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:02,188 INFO L168 Benchmark]: RCFGBuilder took 246.67 ms. Allocated memory is still 187.7 MB. Free memory was 169.3 MB in the beginning and 155.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:02,188 INFO L168 Benchmark]: TraceAbstraction took 2211.52 ms. Allocated memory was 187.7 MB in the beginning and 252.7 MB in the end (delta: 65.0 MB). Free memory was 154.6 MB in the beginning and 203.6 MB in the end (delta: -49.0 MB). Peak memory consumption was 127.1 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:02,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 187.7 MB. Free memory is still 169.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 176.80 ms. Allocated memory is still 187.7 MB. Free memory was 152.4 MB in the beginning and 170.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.73 ms. Allocated memory is still 187.7 MB. Free memory was 170.9 MB in the beginning and 169.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 246.67 ms. Allocated memory is still 187.7 MB. Free memory was 169.3 MB in the beginning and 155.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2211.52 ms. Allocated memory was 187.7 MB in the beginning and 252.7 MB in the end (delta: 65.0 MB). Free memory was 154.6 MB in the beginning and 203.6 MB in the end (delta: -49.0 MB). Peak memory consumption was 127.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1962.3ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 7.2ms, AutomataDifference: 703.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 203.6ms, InitialAbstractionConstructionTime: 5.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 51 SDslu, 69 SDs, 0 SdLazy, 155 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 169.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 800.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 45 PreInvPairs, 68 NumberOfFragments, 209 HoareAnnotationTreeSize, 45 FomulaSimplifications, 1491 FormulaSimplificationTreeSizeReduction, 40.2ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 610 FormulaSimplificationTreeSizeReductionInter, 155.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post6_16,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post7_11,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_23,QUANTIFIED] [2021-05-06 12:19:02,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_19,QUANTIFIED] Derived loop invariant: (\exists v_main_~x~0_23 : int, v_main_#t~post6_16 : int, v_main_#t~post7_11 : int, v_main_~y~0_19 : int :: ((((((x < n + 1 && v_main_~x~0_23 < x) && x + v_main_~y~0_19 == v_main_~x~0_23 + y) && v_main_~y~0_19 < v_main_~x~0_23 + 1) || (((v_main_~y~0_19 == y && v_main_~x~0_23 == x) && aux-x++-aux == v_main_#t~post6_16) && aux-y++-aux == v_main_#t~post7_11)) || ((((v_main_~y~0_19 == y && (v_main_~x~0_23 + 1 <= v_main_~y~0_19 || n <= v_main_~x~0_23)) && v_main_~x~0_23 == x) && aux-x++-aux == v_main_#t~post6_16) && aux-y++-aux == v_main_#t~post7_11)) && v_main_~y~0_19 + 1 <= n) && v_main_~x~0_23 <= v_main_~y~0_19) - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...