/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:43:15,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:43:15,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:43:15,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:43:15,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:43:15,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:43:15,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:43:15,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:43:15,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:43:15,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:43:15,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:43:15,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:43:15,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:43:15,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:43:15,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:43:15,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:43:15,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:43:15,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:43:15,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:43:15,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:43:15,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:43:15,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:43:15,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:43:15,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:43:15,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:43:15,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:43:15,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:43:15,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:43:15,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:43:15,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:43:15,335 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:43:15,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:43:15,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:43:15,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:43:15,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:43:15,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:43:15,859 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:43:15,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2021-05-02 23:43:15,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7148ff4ab/ae7b81d2fea74fc5bc67b832fc04b4c3/FLAG48a03dcd1 [2021-05-02 23:43:16,458 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:43:16,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2021-05-02 23:43:16,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7148ff4ab/ae7b81d2fea74fc5bc67b832fc04b4c3/FLAG48a03dcd1 [2021-05-02 23:43:16,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7148ff4ab/ae7b81d2fea74fc5bc67b832fc04b4c3 [2021-05-02 23:43:16,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:43:16,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:43:16,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:43:16,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:43:16,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:43:16,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:43:16" (1/1) ... [2021-05-02 23:43:16,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6863b444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:16, skipping insertion in model container [2021-05-02 23:43:16,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:43:16" (1/1) ... [2021-05-02 23:43:16,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:43:16,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:43:17,087 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i[895,908] [2021-05-02 23:43:17,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:43:17,124 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:43:17,141 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i[895,908] [2021-05-02 23:43:17,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:43:17,167 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:43:17,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17 WrapperNode [2021-05-02 23:43:17,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:43:17,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:43:17,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:43:17,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:43:17,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (1/1) ... [2021-05-02 23:43:17,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (1/1) ... [2021-05-02 23:43:17,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (1/1) ... [2021-05-02 23:43:17,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (1/1) ... [2021-05-02 23:43:17,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (1/1) ... [2021-05-02 23:43:17,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (1/1) ... [2021-05-02 23:43:17,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (1/1) ... [2021-05-02 23:43:17,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:43:17,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:43:17,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:43:17,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:43:17,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (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 [2021-05-02 23:43:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:43:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:43:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:43:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 23:43:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:43:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:43:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:43:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:43:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 23:43:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 23:43:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:43:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:43:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 23:43:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:43:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 23:43:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:43:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:43:17,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:43:17,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:43:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:43:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:43:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:43:17,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:43:17,892 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:43:17,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:43:17 BoogieIcfgContainer [2021-05-02 23:43:17,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:43:17,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:43:17,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:43:17,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:43:17,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:43:16" (1/3) ... [2021-05-02 23:43:17,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a03284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:43:17, skipping insertion in model container [2021-05-02 23:43:17,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:43:17" (2/3) ... [2021-05-02 23:43:17,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a03284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:43:17, skipping insertion in model container [2021-05-02 23:43:17,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:43:17" (3/3) ... [2021-05-02 23:43:17,926 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2021-05-02 23:43:17,935 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:43:17,958 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:43:18,025 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:43:18,076 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:43:18,076 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:43:18,077 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:43:18,077 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:43:18,077 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:43:18,077 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:43:18,077 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:43:18,077 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:43:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:43:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 23:43:18,128 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:43:18,130 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:43:18,131 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:43:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:43:18,146 INFO L82 PathProgramCache]: Analyzing trace with hash 499112448, now seen corresponding path program 1 times [2021-05-02 23:43:18,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:43:18,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769885151] [2021-05-02 23:43:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:43:18,261 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:43:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:43:18,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:43:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:43:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:43:18,660 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:43:18,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769885151] [2021-05-02 23:43:18,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1769885151] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:43:18,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:43:18,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 23:43:18,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517435697] [2021-05-02 23:43:18,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 23:43:18,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:43:18,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 23:43:18,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:43:18,706 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2021-05-02 23:43:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:43:18,888 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-05-02 23:43:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 23:43:18,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 [2021-05-02 23:43:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:43:18,906 INFO L225 Difference]: With dead ends: 33 [2021-05-02 23:43:18,906 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 23:43:18,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:43:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 23:43:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 23:43:18,998 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) [2021-05-02 23:43:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 23:43:19,003 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-05-02 23:43:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:43:19,004 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 23:43:19,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2021-05-02 23:43:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 23:43:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 23:43:19,011 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:43:19,011 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:43:19,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:43:19,012 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:43:19,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:43:19,014 INFO L82 PathProgramCache]: Analyzing trace with hash 495418364, now seen corresponding path program 1 times [2021-05-02 23:43:19,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:43:19,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788570439] [2021-05-02 23:43:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:43:19,024 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:43:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:43:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:43:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:43:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:43:19,375 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:43:19,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788570439] [2021-05-02 23:43:19,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [788570439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:43:19,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:43:19,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 23:43:19,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311742749] [2021-05-02 23:43:19,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 23:43:19,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:43:19,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 23:43:19,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 23:43:19,381 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2021-05-02 23:43:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:43:19,741 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 23:43:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 23:43:19,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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 [2021-05-02 23:43:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:43:19,767 INFO L225 Difference]: With dead ends: 20 [2021-05-02 23:43:19,768 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 23:43:19,770 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 344.8ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:43:19,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 23:43:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 23:43:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-05-02 23:43:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 23:43:19,779 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-02 23:43:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:43:19,780 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 23:43:19,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2021-05-02 23:43:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 23:43:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 23:43:19,781 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:43:19,781 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:43:19,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:43:19,782 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:43:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:43:19,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1787404818, now seen corresponding path program 1 times [2021-05-02 23:43:19,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:43:19,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134742045] [2021-05-02 23:43:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:43:19,887 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 v_main_~cnt~0_7) InVars {main_~cnt~0=v_main_~cnt~0_7} OutVars{main_~cnt~0=v_main_~cnt~0_7} AuxVars[] AssignedVars[] [2021-05-02 23:43:19,914 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 88.9 percent of original size [2021-05-02 23:43:19,947 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:20,010 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-02 23:43:20,054 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 88.9 percent of original size 48 [2021-05-02 23:43:20,091 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:43:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:43:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:43:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:43:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:43:20,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:43:20,478 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:43:20,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134742045] [2021-05-02 23:43:20,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [134742045] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:43:20,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:43:20,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 23:43:20,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231223729] [2021-05-02 23:43:20,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 23:43:20,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:43:20,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 23:43:20,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:43:20,484 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:43:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:43:20,761 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-05-02 23:43:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 23:43:20,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 23:43:20,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:43:20,763 INFO L225 Difference]: With dead ends: 15 [2021-05-02 23:43:20,764 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 23:43:20,766 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 293.7ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-05-02 23:43:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 23:43:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 23:43:20,767 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) [2021-05-02 23:43:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 23:43:20,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-02 23:43:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:43:20,768 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 23:43:20,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:43:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 23:43:20,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 23:43:20,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 23:43:20,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 23:43:21,062 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 23:43:21,064 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 23:43:21,064 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 23:43:21,064 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:43:21,065 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)|)) [2021-05-02 23:43:21,065 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:43:21,065 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:43:21,065 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 23:43:21,065 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 23:43:21,065 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:43:21,065 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-02 23:43:21,065 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-02 23:43:21,066 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-02 23:43:21,066 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-02 23:43:21,066 INFO L194 CegarLoopUtils]: At program point L32-2(lines 32 35) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~res~0 .cse0))) [2021-05-02 23:43:21,066 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-05-02 23:43:21,066 INFO L201 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-05-02 23:43:21,066 INFO L194 CegarLoopUtils]: At program point L32-3(lines 32 35) the Hoare annotation is: (and (<= (+ main_~a~0 main_~b~0) main_~res~0) (< main_~res~0 (+ main_~a~0 main_~b~0 1))) [2021-05-02 23:43:21,066 INFO L201 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-05-02 23:43:21,066 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 24 38) the Hoare annotation is: true [2021-05-02 23:43:21,067 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 24 38) the Hoare annotation is: true [2021-05-02 23:43:21,067 INFO L201 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: true [2021-05-02 23:43:21,067 INFO L201 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-05-02 23:43:21,068 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-02 23:43:21,068 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-05-02 23:43:21,068 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:43:21,068 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:43:21,069 INFO L194 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:43:21,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:43:21 BoogieIcfgContainer [2021-05-02 23:43:21,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:43:21,103 INFO L168 Benchmark]: Toolchain (without parser) took 4227.41 ms. Allocated memory is still 162.5 MB. Free memory was 127.8 MB in the beginning and 70.0 MB in the end (delta: 57.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:43:21,105 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 162.5 MB. Free memory is still 144.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:43:21,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.22 ms. Allocated memory is still 162.5 MB. Free memory was 127.6 MB in the beginning and 118.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:43:21,106 INFO L168 Benchmark]: Boogie Preprocessor took 124.21 ms. Allocated memory is still 162.5 MB. Free memory was 117.9 MB in the beginning and 146.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2021-05-02 23:43:21,107 INFO L168 Benchmark]: RCFGBuilder took 598.92 ms. Allocated memory is still 162.5 MB. Free memory was 146.0 MB in the beginning and 130.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 23:43:21,108 INFO L168 Benchmark]: TraceAbstraction took 3198.22 ms. Allocated memory is still 162.5 MB. Free memory was 130.4 MB in the beginning and 70.0 MB in the end (delta: 60.4 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. [2021-05-02 23:43:21,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 162.5 MB. Free memory is still 144.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.22 ms. Allocated memory is still 162.5 MB. Free memory was 127.6 MB in the beginning and 118.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 124.21 ms. Allocated memory is still 162.5 MB. Free memory was 117.9 MB in the beginning and 146.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 598.92 ms. Allocated memory is still 162.5 MB. Free memory was 146.0 MB in the beginning and 130.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3198.22 ms. Allocated memory is still 162.5 MB. Free memory was 130.4 MB in the beginning and 70.0 MB in the end (delta: 60.4 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2700.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 35.9ms, AutomataDifference: 905.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 291.7ms, InitialAbstractionConstructionTime: 21.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 33 SDslu, 40 SDs, 0 SdLazy, 64 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 200.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 747.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 75.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 33 PreInvPairs, 45 NumberOfFragments, 86 HoareAnnotationTreeSize, 33 FomulaSimplifications, 64 FormulaSimplificationTreeSizeReduction, 142.9ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 365 FormulaSimplificationTreeSizeReductionInter, 116.0ms 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: 32]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res + cnt <= a + b) && res <= a + b - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...