/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/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:09:07,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:09:07,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:09:07,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 11:09:07,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 11:09:07,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 11:09:07,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 11:09:07,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 11:09:07,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 11:09:07,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 11:09:07,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 11:09:07,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 11:09:07,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:09:07,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:09:07,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:09:07,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:09:07,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:09:07,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:09:07,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:09:07,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:09:07,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:09:07,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:09:07,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:09:07,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:09:07,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:09:07,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:09:07,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:09:07,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:09:07,630 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 11:09:07,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:09:07,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:09:07,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:09:07,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:09:07,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:09:07,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:09:07,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:09:07,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:09:07,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:09:07,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:09:07,651 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:09:07,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:09:07,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:09:07,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:09:07,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:09:07,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:09:07,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:09:07,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:09:07,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:09:07,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:09:07,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:09:07,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:09:07,653 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:09:07,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:09:07,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:09:07,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:09:07,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:09:07,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:09:07,980 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:09:07,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2021-05-06 11:09:08,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8e6b9b8/9012724d3b3540679af196791da5f917/FLAG83bb0910e [2021-05-06 11:09:08,454 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:09:08,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c [2021-05-06 11:09:08,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8e6b9b8/9012724d3b3540679af196791da5f917/FLAG83bb0910e [2021-05-06 11:09:08,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8e6b9b8/9012724d3b3540679af196791da5f917 [2021-05-06 11:09:08,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:09:08,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:09:08,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:09:08,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:09:08,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:09:08,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5e5aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08, skipping insertion in model container [2021-05-06 11:09:08,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:09:08,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:09:08,658 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c[318,331] [2021-05-06 11:09:08,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:09:08,729 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:09:08,755 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c[318,331] [2021-05-06 11:09:08,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:09:08,824 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:09:08,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08 WrapperNode [2021-05-06 11:09:08,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:09:08,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:09:08,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:09:08,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:09:08,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (1/1) ... [2021-05-06 11:09:08,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:09:08,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:09:08,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:09:08,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:09:08,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (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 11:09:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:09:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:09:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:09:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:09:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2021-05-06 11:09:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:09:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2021-05-06 11:09:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:09:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:09:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:09:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:09:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:09:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2021-05-06 11:09:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2021-05-06 11:09:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:09:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-05-06 11:09:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-05-06 11:09:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:09:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:09:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:09:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:09:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:09:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:09:09,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:09:09,333 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-05-06 11:09:09,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:09:09 BoogieIcfgContainer [2021-05-06 11:09:09,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:09:09,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:09:09,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:09:09,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:09:09,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:09:08" (1/3) ... [2021-05-06 11:09:09,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbee129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:09:09, skipping insertion in model container [2021-05-06 11:09:09,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:08" (2/3) ... [2021-05-06 11:09:09,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbee129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:09:09, skipping insertion in model container [2021-05-06 11:09:09,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:09:09" (3/3) ... [2021-05-06 11:09:09,358 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-05-06 11:09:09,369 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:09:09,372 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:09:09,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:09:09,413 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:09:09,414 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:09:09,414 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:09:09,414 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:09:09,414 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:09:09,414 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:09:09,414 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:09:09,414 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:09:09,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:09:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 11:09:09,437 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:09:09,438 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:09:09,438 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:09:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:09:09,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1448102218, now seen corresponding path program 1 times [2021-05-06 11:09:09,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:09:09,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215246337] [2021-05-06 11:09:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:09:09,500 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:09:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:09,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:09:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:09,712 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 11:09:09,713 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:09:09,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215246337] [2021-05-06 11:09:09,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1215246337] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:09:09,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:09:09,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 11:09:09,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834258943] [2021-05-06 11:09:09,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 11:09:09,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:09:09,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 11:09:09,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:09:09,733 INFO L87 Difference]: Start difference. First operand has 64 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 11:09:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:09:10,021 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2021-05-06 11:09:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:09:10,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 11:09:10,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:09:10,029 INFO L225 Difference]: With dead ends: 127 [2021-05-06 11:09:10,030 INFO L226 Difference]: Without dead ends: 24 [2021-05-06 11:09:10,034 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:09:10,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-06 11:09:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-05-06 11:09:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:09:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-06 11:09:10,074 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2021-05-06 11:09:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:09:10,074 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-06 11:09:10,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 11:09:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-06 11:09:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 11:09:10,076 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:09:10,076 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:09:10,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:09:10,076 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:09:10,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:09:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1436096445, now seen corresponding path program 1 times [2021-05-06 11:09:10,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:09:10,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163146074] [2021-05-06 11:09:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:09:10,091 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:09:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:10,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:09:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:10,279 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 11:09:10,279 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:09:10,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163146074] [2021-05-06 11:09:10,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1163146074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:09:10,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:09:10,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 11:09:10,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116011940] [2021-05-06 11:09:10,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 11:09:10,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:09:10,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 11:09:10,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:09:10,281 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 11:09:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:09:10,450 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2021-05-06 11:09:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:09:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 11:09:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:09:10,452 INFO L225 Difference]: With dead ends: 40 [2021-05-06 11:09:10,452 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 11:09:10,453 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:09:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 11:09:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-05-06 11:09:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:09:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-05-06 11:09:10,463 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2021-05-06 11:09:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:09:10,463 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-05-06 11:09:10,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 11:09:10,464 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-05-06 11:09:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-06 11:09:10,465 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:09:10,465 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:09:10,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:09:10,466 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:09:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:09:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1858105272, now seen corresponding path program 1 times [2021-05-06 11:09:10,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:09:10,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321591853] [2021-05-06 11:09:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:09:10,491 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:09:10,495 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-06 11:09:10,497 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:09:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:09:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:10,634 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 11:09:10,634 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:09:10,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321591853] [2021-05-06 11:09:10,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1321591853] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:09:10,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:09:10,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:09:10,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672474426] [2021-05-06 11:09:10,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:09:10,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:09:10,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:09:10,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:09:10,636 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 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 11:09:10,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:09:10,899 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-05-06 11:09:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:09:10,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 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 11:09:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:09:10,901 INFO L225 Difference]: With dead ends: 36 [2021-05-06 11:09:10,901 INFO L226 Difference]: Without dead ends: 34 [2021-05-06 11:09:10,901 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 234.2ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:09:10,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-06 11:09:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-05-06 11:09:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:09:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-06 11:09:10,909 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2021-05-06 11:09:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:09:10,910 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-06 11:09:10,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 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 11:09:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-06 11:09:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 11:09:10,911 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:09:10,911 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:09:10,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:09:10,911 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:09:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:09:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash 419710194, now seen corresponding path program 1 times [2021-05-06 11:09:10,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:09:10,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159066106] [2021-05-06 11:09:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:09:10,922 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:09:10,922 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-06 11:09:10,924 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:09:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:11,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:09:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:11,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 11:09:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:11,033 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 11:09:11,034 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:09:11,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159066106] [2021-05-06 11:09:11,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [159066106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:09:11,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:09:11,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 11:09:11,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017634636] [2021-05-06 11:09:11,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 11:09:11,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:09:11,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 11:09:11,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:09:11,039 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:09:11,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:09:11,325 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-05-06 11:09:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 11:09:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-05-06 11:09:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:09:11,326 INFO L225 Difference]: With dead ends: 49 [2021-05-06 11:09:11,326 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 11:09:11,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 228.1ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:09:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 11:09:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-05-06 11:09:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.2) internal successors, (42), 36 states have internal predecessors, (42), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:09:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-05-06 11:09:11,336 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 29 [2021-05-06 11:09:11,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:09:11,336 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-05-06 11:09:11,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:09:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-05-06 11:09:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-06 11:09:11,338 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:09:11,338 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:09:11,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 11:09:11,338 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:09:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:09:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash 681721336, now seen corresponding path program 2 times [2021-05-06 11:09:11,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:09:11,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058432143] [2021-05-06 11:09:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:09:11,348 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:09:11,349 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-06 11:09:11,350 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:09:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:09:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 11:09:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:11,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-06 11:09:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:11,451 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 11:09:11,451 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:09:11,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058432143] [2021-05-06 11:09:11,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1058432143] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:09:11,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:09:11,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 11:09:11,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654295006] [2021-05-06 11:09:11,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 11:09:11,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:09:11,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 11:09:11,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:09:11,453 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:09:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:09:11,640 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-05-06 11:09:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:09:11,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-05-06 11:09:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:09:11,642 INFO L225 Difference]: With dead ends: 45 [2021-05-06 11:09:11,642 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:09:11,642 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.5ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:09:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:09:11,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:09:11,643 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 11:09:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:09:11,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-05-06 11:09:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:09:11,643 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:09:11,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:09:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:09:11,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:09:11,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-06 11:09:11,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:09:12,007 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-06 11:09:12,007 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-06 11:09:12,007 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-06 11:09:12,008 INFO L201 CegarLoopUtils]: At program point L118-2(lines 118 136) the Hoare annotation is: true [2021-05-06 11:09:12,008 INFO L201 CegarLoopUtils]: At program point L118-3(lines 118 136) the Hoare annotation is: true [2021-05-06 11:09:12,008 INFO L201 CegarLoopUtils]: At program point L118-4(lines 118 136) the Hoare annotation is: true [2021-05-06 11:09:12,008 INFO L201 CegarLoopUtils]: At program point L120(line 120) the Hoare annotation is: true [2021-05-06 11:09:12,008 INFO L201 CegarLoopUtils]: At program point L120-1(line 120) the Hoare annotation is: true [2021-05-06 11:09:12,008 INFO L201 CegarLoopUtils]: At program point ludcmpEXIT(lines 111 155) the Hoare annotation is: true [2021-05-06 11:09:12,008 INFO L194 CegarLoopUtils]: At program point ludcmpENTRY(lines 111 155) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L129-2(lines 129 135) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L129-3(lines 129 135) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L121-2(lines 121 128) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L121-3(lines 121 128) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L121-4(lines 121 128) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L146-2(lines 146 152) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L146-3(lines 146 152) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L146-4(lines 146 152) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point ludcmpFINAL(lines 111 155) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L138-2(lines 138 144) the Hoare annotation is: true [2021-05-06 11:09:12,009 INFO L201 CegarLoopUtils]: At program point L138-3(lines 138 144) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L138-4(lines 138 144) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L132-2(lines 132 133) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L132-3(lines 132 133) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L132-4(lines 132 133) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L124(lines 124 126) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L124-1(lines 124 126) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L149-2(lines 149 150) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L149-3(lines 149 150) the Hoare annotation is: true [2021-05-06 11:09:12,010 INFO L201 CegarLoopUtils]: At program point L149-4(lines 149 150) the Hoare annotation is: true [2021-05-06 11:09:12,011 INFO L201 CegarLoopUtils]: At program point L141-2(lines 141 142) the Hoare annotation is: true [2021-05-06 11:09:12,011 INFO L201 CegarLoopUtils]: At program point L141-3(lines 141 142) the Hoare annotation is: true [2021-05-06 11:09:12,011 INFO L201 CegarLoopUtils]: At program point L141-4(lines 141 142) the Hoare annotation is: true [2021-05-06 11:09:12,011 INFO L201 CegarLoopUtils]: At program point L125-2(lines 125 126) the Hoare annotation is: true [2021-05-06 11:09:12,011 INFO L201 CegarLoopUtils]: At program point L125-3(lines 125 126) the Hoare annotation is: true [2021-05-06 11:09:12,011 INFO L201 CegarLoopUtils]: At program point L117(line 117) the Hoare annotation is: true [2021-05-06 11:09:12,011 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:09:12,011 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |old(#memory_real)| |#memory_real|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-05-06 11:09:12,011 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point L80(lines 80 81) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point L80-2(lines 80 81) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point fabsEXIT(lines 76 83) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point fabsENTRY(lines 76 83) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point fabsFINAL(lines 76 83) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:09:12,012 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:09:12,013 INFO L194 CegarLoopUtils]: At program point L99-2(line 99) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-06 11:09:12,013 INFO L194 CegarLoopUtils]: At program point L93-2(lines 93 104) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-06 11:09:12,013 INFO L194 CegarLoopUtils]: At program point L93-3(lines 93 104) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-06 11:09:12,013 INFO L201 CegarLoopUtils]: At program point L93-4(lines 93 104) the Hoare annotation is: true [2021-05-06 11:09:12,013 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 85 109) the Hoare annotation is: true [2021-05-06 11:09:12,013 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 85 109) the Hoare annotation is: true [2021-05-06 11:09:12,013 INFO L201 CegarLoopUtils]: At program point L106(line 106) the Hoare annotation is: true [2021-05-06 11:09:12,013 INFO L194 CegarLoopUtils]: At program point L102(line 102) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-06 11:09:12,013 INFO L194 CegarLoopUtils]: At program point L96-2(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-06 11:09:12,014 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 85 109) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-05-06 11:09:12,014 INFO L194 CegarLoopUtils]: At program point L96-3(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-06 11:09:12,014 INFO L194 CegarLoopUtils]: At program point L96-4(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-06 11:09:12,014 INFO L194 CegarLoopUtils]: At program point L99(line 99) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-06 11:09:12,014 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-06 11:09:12,014 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:09:12,014 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:09:12,015 INFO L194 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:09:12,015 INFO L194 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:09:12,015 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:09:12,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:09:12 BoogieIcfgContainer [2021-05-06 11:09:12,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:09:12,037 INFO L168 Benchmark]: Toolchain (without parser) took 3549.59 ms. Allocated memory was 195.0 MB in the beginning and 245.4 MB in the end (delta: 50.3 MB). Free memory was 160.6 MB in the beginning and 93.3 MB in the end (delta: 67.3 MB). Peak memory consumption was 119.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:12,038 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 195.0 MB. Free memory is still 177.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:09:12,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.09 ms. Allocated memory is still 195.0 MB. Free memory was 160.4 MB in the beginning and 176.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:12,040 INFO L168 Benchmark]: Boogie Preprocessor took 65.57 ms. Allocated memory is still 195.0 MB. Free memory was 176.7 MB in the beginning and 174.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:12,041 INFO L168 Benchmark]: RCFGBuilder took 441.65 ms. Allocated memory is still 195.0 MB. Free memory was 174.6 MB in the beginning and 145.2 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:12,044 INFO L168 Benchmark]: TraceAbstraction took 2700.75 ms. Allocated memory was 195.0 MB in the beginning and 245.4 MB in the end (delta: 50.3 MB). Free memory was 144.7 MB in the beginning and 93.3 MB in the end (delta: 51.4 MB). Peak memory consumption was 102.8 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:12,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 195.0 MB. Free memory is still 177.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 333.09 ms. Allocated memory is still 195.0 MB. Free memory was 160.4 MB in the beginning and 176.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.57 ms. Allocated memory is still 195.0 MB. Free memory was 176.7 MB in the beginning and 174.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 441.65 ms. Allocated memory is still 195.0 MB. Free memory was 174.6 MB in the beginning and 145.2 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2700.75 ms. Allocated memory was 195.0 MB in the beginning and 245.4 MB in the end (delta: 50.3 MB). Free memory was 144.7 MB in the beginning and 93.3 MB in the end (delta: 51.4 MB). Peak memory consumption was 102.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 7 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2233.3ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 14.1ms, AutomataDifference: 1233.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 362.3ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 126 SDtfs, 89 SDslu, 105 SDs, 0 SdLazy, 285 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 371.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 855.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 54.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 64 LocationsWithAnnotation, 159 PreInvPairs, 259 NumberOfFragments, 227 HoareAnnotationTreeSize, 159 FomulaSimplifications, 837 FormulaSimplificationTreeSizeReduction, 93.7ms HoareSimplificationTime, 64 FomulaSimplificationsInter, 566 FormulaSimplificationTreeSizeReductionInter, 252.6ms 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: 132]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (i <= 5 && n <= 5) && 5 <= n - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: n <= 5 && 5 <= n - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 111]: Procedure Contract for ludcmp Derived contract for procedure ludcmp: 1 - ProcedureContractResult [Line: 76]: Procedure Contract for fabs Derived contract for procedure fabs: 1 - ProcedureContractResult [Line: 85]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...