/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/sum04-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:19:39,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:19:39,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:19:39,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:19:39,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:19:39,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:19:39,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:19:39,830 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 11:19:39,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:19:39,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:19:39,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:19:39,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:19:39,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:19:39,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:19:39,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:19:39,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:19:39,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:19:39,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:19:39,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:19:39,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:19:39,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:19:39,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:19:39,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:19:39,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:19:39,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:19:39,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:19:39,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:19:39,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:19:39,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:19:39,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:19:39,855 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:19:39,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:19:40,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:19:40,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:19:40,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:19:40,107 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:19:40,107 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:19:40,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-2.i [2021-05-06 11:19:40,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/394ed49d9/c1bbc5dcb3124ef58b57ea87b5dd2bab/FLAG0a4997c73 [2021-05-06 11:19:40,526 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:19:40,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-2.i [2021-05-06 11:19:40,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/394ed49d9/c1bbc5dcb3124ef58b57ea87b5dd2bab/FLAG0a4997c73 [2021-05-06 11:19:40,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/394ed49d9/c1bbc5dcb3124ef58b57ea87b5dd2bab [2021-05-06 11:19:40,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:19:40,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:19:40,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:19:40,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:19:40,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:19:40,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c4eecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40, skipping insertion in model container [2021-05-06 11:19:40,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:19:40,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:19:40,680 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/sum04-2.i[808,821] [2021-05-06 11:19:40,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:19:40,693 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:19:40,702 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/sum04-2.i[808,821] [2021-05-06 11:19:40,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:19:40,714 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:19:40,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40 WrapperNode [2021-05-06 11:19:40,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:19:40,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:19:40,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:19:40,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:19:40,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (1/1) ... [2021-05-06 11:19:40,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:19:40,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:19:40,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:19:40,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:19:40,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (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 11:19:40,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:19:40,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:19:40,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:19:40,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:19:40,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:19:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:19:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:19:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:19:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:19:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:19:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:19:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:19:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:19:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:19:40,982 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:19:40,982 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 11:19:40,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:19:40 BoogieIcfgContainer [2021-05-06 11:19:40,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:19:40,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:19:40,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:19:40,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:19:40,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:19:40" (1/3) ... [2021-05-06 11:19:40,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd99a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:19:40, skipping insertion in model container [2021-05-06 11:19:40,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:19:40" (2/3) ... [2021-05-06 11:19:40,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd99a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:19:40, skipping insertion in model container [2021-05-06 11:19:40,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:19:40" (3/3) ... [2021-05-06 11:19:40,988 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2021-05-06 11:19:40,991 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:19:40,993 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:19:41,004 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:19:41,033 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:19:41,033 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:19:41,033 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:19:41,033 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:19:41,034 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:19:41,034 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:19:41,034 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:19:41,034 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:19:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 11:19:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:19:41,059 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:19:41,059 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:19:41,060 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:19:41,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:19:41,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1274873075, now seen corresponding path program 1 times [2021-05-06 11:19:41,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:19:41,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561049644] [2021-05-06 11:19:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:19:41,128 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:19:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:19:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:19:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:19:41,288 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 11:19:41,289 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:19:41,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561049644] [2021-05-06 11:19:41,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1561049644] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:19:41,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:19:41,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 11:19:41,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680106201] [2021-05-06 11:19:41,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 11:19:41,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:19:41,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 11:19:41,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:19:41,306 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11:19:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:19:41,354 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-06 11:19:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:19:41,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2021-05-06 11:19:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:19:41,360 INFO L225 Difference]: With dead ends: 30 [2021-05-06 11:19:41,360 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 11:19:41,362 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:19:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 11:19:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 11:19:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 11:19:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 11:19:41,391 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-06 11:19:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:19:41,391 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 11:19:41,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11:19:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 11:19:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:19:41,392 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:19:41,392 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:19:41,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:19:41,393 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:19:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:19:41,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1280414201, now seen corresponding path program 1 times [2021-05-06 11:19:41,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:19:41,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197750232] [2021-05-06 11:19:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:19:41,404 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:19:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:19:41,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:19:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:19:41,491 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 11:19:41,492 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:19:41,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197750232] [2021-05-06 11:19:41,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1197750232] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:19:41,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:19:41,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:19:41,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104894709] [2021-05-06 11:19:41,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:19:41,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:19:41,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:19:41,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:19:41,494 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11:19:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:19:41,556 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-06 11:19:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:19:41,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2021-05-06 11:19:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:19:41,558 INFO L225 Difference]: With dead ends: 20 [2021-05-06 11:19:41,558 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 11:19:41,559 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:19:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 11:19:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-05-06 11:19:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 11:19:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-06 11:19:41,573 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-05-06 11:19:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:19:41,573 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-06 11:19:41,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11:19:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-06 11:19:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 11:19:41,574 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:19:41,575 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:19:41,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:19:41,575 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:19:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:19:41,575 INFO L82 PathProgramCache]: Analyzing trace with hash -985852763, now seen corresponding path program 1 times [2021-05-06 11:19:41,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:19:41,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127457440] [2021-05-06 11:19:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:19:41,631 WARN L240 tifierPushTermWalker]: treesize reduction 3, result has 94.5 percent of original size [2021-05-06 11:19:41,635 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:19:41,649 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-06 11:19:41,677 WARN L245 tifierPushTermWalker]: treesize reduction 3, result has 94.5 percent of original size 52 [2021-05-06 11:19:41,696 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:19:41,699 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:19:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:19:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:19:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:19:41,870 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 11:19:41,991 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:19:41,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127457440] [2021-05-06 11:19:41,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1127457440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:19:41,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:19:41,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 11:19:41,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801996264] [2021-05-06 11:19:41,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 11:19:41,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:19:41,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 11:19:41,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:19:41,993 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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 11:19:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:19:42,289 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-06 11:19:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 11:19:42,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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 13 [2021-05-06 11:19:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:19:42,289 INFO L225 Difference]: With dead ends: 14 [2021-05-06 11:19:42,289 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:19:42,290 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 422.9ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-05-06 11:19:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:19:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:19:42,290 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 11:19:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:19:42,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-05-06 11:19:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:19:42,290 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:19:42,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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 11:19:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:19:42,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:19:42,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:19:42,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:19:42,470 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-06 11:19:42,470 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-06 11:19:42,470 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-06 11:19:42,470 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:19:42,471 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 11:19:42,471 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:19:42,471 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:19:42,471 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:19:42,471 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:19:42,471 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:19:42,471 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 22 28) the Hoare annotation is: true [2021-05-06 11:19:42,471 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 22 28) the Hoare annotation is: true [2021-05-06 11:19:42,472 INFO L194 CegarLoopUtils]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (or (and (= main_~i~0 1) (= 2 main_~sn~0)) (and (= (* main_~i~0 2) main_~sn~0) (< 1 main_~i~0))) (<= main_~i~0 8)) [2021-05-06 11:19:42,472 INFO L194 CegarLoopUtils]: At program point L24-3(lines 24 26) the Hoare annotation is: (or (and (or (and (= main_~i~0 2) (= 2 main_~sn~0)) (and (= (* main_~i~0 2) (+ main_~sn~0 2)) (< 2 main_~i~0))) (<= main_~i~0 9)) (and (= main_~sn~0 0) (= main_~i~0 1))) [2021-05-06 11:19:42,472 INFO L194 CegarLoopUtils]: At program point L24-4(lines 24 26) the Hoare annotation is: (and (< 15 main_~sn~0) (= (* main_~i~0 2) (+ main_~sn~0 2)) (<= main_~i~0 9)) [2021-05-06 11:19:42,472 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 22 28) the Hoare annotation is: true [2021-05-06 11:19:42,472 INFO L194 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:19:42,472 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 11:19:42,472 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-05-06 11:19:42,472 INFO L201 CegarLoopUtils]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2021-05-06 11:19:42,472 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: true [2021-05-06 11:19:42,472 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:19:42,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:19:42 BoogieIcfgContainer [2021-05-06 11:19:42,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:19:42,484 INFO L168 Benchmark]: Toolchain (without parser) took 1938.25 ms. Allocated memory is still 212.9 MB. Free memory was 177.5 MB in the beginning and 141.5 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.4 MB. Max. memory is 8.0 GB. [2021-05-06 11:19:42,485 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 212.9 MB. Free memory is still 194.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:19:42,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.03 ms. Allocated memory is still 212.9 MB. Free memory was 177.3 MB in the beginning and 167.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 11:19:42,485 INFO L168 Benchmark]: Boogie Preprocessor took 63.76 ms. Allocated memory is still 212.9 MB. Free memory was 167.9 MB in the beginning and 196.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:19:42,486 INFO L168 Benchmark]: RCFGBuilder took 202.82 ms. Allocated memory is still 212.9 MB. Free memory was 196.0 MB in the beginning and 182.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:19:42,486 INFO L168 Benchmark]: TraceAbstraction took 1499.95 ms. Allocated memory is still 212.9 MB. Free memory was 181.8 MB in the beginning and 141.5 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:19:42,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 212.9 MB. Free memory is still 194.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 165.03 ms. Allocated memory is still 212.9 MB. Free memory was 177.3 MB in the beginning and 167.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.76 ms. Allocated memory is still 212.9 MB. Free memory was 167.9 MB in the beginning and 196.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 202.82 ms. Allocated memory is still 212.9 MB. Free memory was 196.0 MB in the beginning and 182.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1499.95 ms. Allocated memory is still 212.9 MB. Free memory was 181.8 MB in the beginning and 141.5 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. * 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, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1259.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 21.0ms, AutomataDifference: 429.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 178.6ms, InitialAbstractionConstructionTime: 5.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 25 SDslu, 36 SDs, 0 SdLazy, 50 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 515.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 19 LocationsWithAnnotation, 31 PreInvPairs, 41 NumberOfFragments, 117 HoareAnnotationTreeSize, 31 FomulaSimplifications, 58 FormulaSimplificationTreeSizeReduction, 31.8ms HoareSimplificationTime, 19 FomulaSimplificationsInter, 306 FormulaSimplificationTreeSizeReductionInter, 139.4ms 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 Derived loop invariant: (((i == 2 && 2 == sn) || (i * 2 == sn + 2 && 2 < i)) && i <= 9) || (sn == 0 && i == 1) - ProcedureContractResult [Line: 22]: 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...