/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/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:35:50,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:35:50,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:35:50,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:35:50,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:35:50,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:35:50,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:35:50,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:35:50,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:35:50,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:35:50,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:35:50,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:35:50,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:35:50,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:35:50,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:35:50,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:35:50,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:35:50,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:35:50,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:35:50,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:35:50,583 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 11:35:50,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:35:50,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:35:50,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:35:50,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:35:50,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:35:50,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:35:50,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:35:50,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:35:50,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:35:50,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:35:50,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:35:50,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:35:50,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:35:50,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:35:50,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:35:50,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:35:50,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:35:50,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:35:50,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:35:50,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:35:50,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:35:50,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:35:50,605 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:35:50,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:35:50,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:35:50,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:35:50,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:35:50,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:35:50,919 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:35:50,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2021-05-06 11:35:50,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb2feef1/6acb199fc93b4d4499b7aa85105062dd/FLAGce8aa77eb [2021-05-06 11:35:51,393 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:35:51,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2021-05-06 11:35:51,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb2feef1/6acb199fc93b4d4499b7aa85105062dd/FLAGce8aa77eb [2021-05-06 11:35:51,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb2feef1/6acb199fc93b4d4499b7aa85105062dd [2021-05-06 11:35:51,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:35:51,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:35:51,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:51,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:35:51,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:35:51,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:51,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65607b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51, skipping insertion in model container [2021-05-06 11:35:51,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:51,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:35:51,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:35:51,922 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/css2003.i[895,908] [2021-05-06 11:35:51,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:51,936 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:35:51,947 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/css2003.i[895,908] [2021-05-06 11:35:51,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:51,981 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:35:51,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51 WrapperNode [2021-05-06 11:35:51,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:51,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:35:51,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:35:51,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:35:52,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:52,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:52,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:52,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:52,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:52,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:52,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (1/1) ... [2021-05-06 11:35:52,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:35:52,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:35:52,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:35:52,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:35:52,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (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 11:35:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:35:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:35:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:35:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:35:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:35:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:35:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:35:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:35:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:35:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:35:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:35:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:35:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:35:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:35:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:35:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:35:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:35:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:35:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:35:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:35:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:35:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:35:52,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:35:52,369 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 11:35:52,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:52 BoogieIcfgContainer [2021-05-06 11:35:52,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:35:52,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:35:52,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:35:52,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:35:52,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:35:51" (1/3) ... [2021-05-06 11:35:52,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a688ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:52, skipping insertion in model container [2021-05-06 11:35:52,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:51" (2/3) ... [2021-05-06 11:35:52,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a688ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:52, skipping insertion in model container [2021-05-06 11:35:52,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:52" (3/3) ... [2021-05-06 11:35:52,390 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.i [2021-05-06 11:35:52,395 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:35:52,397 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:35:52,414 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:35:52,434 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:35:52,434 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:35:52,434 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:35:52,434 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:35:52,435 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:35:52,435 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:35:52,435 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:35:52,435 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:35:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 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 11:35:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 11:35:52,451 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:52,451 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:52,452 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:52,456 INFO L82 PathProgramCache]: Analyzing trace with hash 255759161, now seen corresponding path program 1 times [2021-05-06 11:35:52,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:52,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616663494] [2021-05-06 11:35:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:52,517 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:52,798 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 11:35:52,800 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:52,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616663494] [2021-05-06 11:35:52,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1616663494] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:52,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:52,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 11:35:52,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997743453] [2021-05-06 11:35:52,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 11:35:52,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:52,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 11:35:52,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 11:35:52,820 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 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 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:53,092 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-05-06 11:35:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:35:53,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 11:35:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:53,097 INFO L225 Difference]: With dead ends: 34 [2021-05-06 11:35:53,097 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:35:53,100 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 242.1ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-05-06 11:35:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:35:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:35:53,114 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 11:35:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:35:53,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-06 11:35:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:53,116 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:35:53,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:35:53,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:35:53,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:35:53,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:35:53,472 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-06 11:35:53,472 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-06 11:35:53,472 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-06 11:35:53,473 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:35:53,473 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 11:35:53,473 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:35:53,473 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:35:53,473 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:35:53,473 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:35:53,473 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:35:53,473 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-06 11:35:53,473 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:53,474 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:53,474 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:53,474 INFO L194 CegarLoopUtils]: At program point L34-1(lines 30 35) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (and (<= main_~k~0 1) (<= 0 main_~k~0) (= main_~i~0 1))) [2021-05-06 11:35:53,474 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2021-05-06 11:35:53,474 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (= main_~i~0 1) [2021-05-06 11:35:53,474 INFO L194 CegarLoopUtils]: At program point L30-2(lines 30 35) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2021-05-06 11:35:53,474 INFO L194 CegarLoopUtils]: At program point mainEXIT(lines 24 37) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (= main_~i~0 1)) [2021-05-06 11:35:53,475 INFO L194 CegarLoopUtils]: At program point mainFINAL(lines 24 37) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (= main_~i~0 1)) [2021-05-06 11:35:53,475 INFO L194 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2021-05-06 11:35:53,475 INFO L194 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:35:53,475 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-06 11:35:53,475 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:35:53,475 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:35:53,475 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:35:53,476 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))) [2021-05-06 11:35:53,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:35:53 BoogieIcfgContainer [2021-05-06 11:35:53,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:35:53,489 INFO L168 Benchmark]: Toolchain (without parser) took 1699.64 ms. Allocated memory is still 226.5 MB. Free memory was 191.8 MB in the beginning and 128.1 MB in the end (delta: 63.6 MB). Peak memory consumption was 63.8 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:53,489 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 226.5 MB. Free memory is still 208.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:35:53,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.06 ms. Allocated memory is still 226.5 MB. Free memory was 191.5 MB in the beginning and 210.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:53,491 INFO L168 Benchmark]: Boogie Preprocessor took 52.95 ms. Allocated memory is still 226.5 MB. Free memory was 210.8 MB in the beginning and 209.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:53,491 INFO L168 Benchmark]: RCFGBuilder took 333.83 ms. Allocated memory is still 226.5 MB. Free memory was 209.1 MB in the beginning and 195.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:53,492 INFO L168 Benchmark]: TraceAbstraction took 1116.64 ms. Allocated memory is still 226.5 MB. Free memory was 195.1 MB in the beginning and 128.1 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:53,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 226.5 MB. Free memory is still 208.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 188.06 ms. Allocated memory is still 226.5 MB. Free memory was 191.5 MB in the beginning and 210.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.95 ms. Allocated memory is still 226.5 MB. Free memory was 210.8 MB in the beginning and 209.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 333.83 ms. Allocated memory is still 226.5 MB. Free memory was 209.1 MB in the beginning and 195.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1116.64 ms. Allocated memory is still 226.5 MB. Free memory was 195.1 MB in the beginning and 128.1 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.7 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, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 684.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.6ms, AutomataDifference: 292.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 354.8ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 34 SDs, 0 SdLazy, 53 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 242.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 20 LocationsWithAnnotation, 26 PreInvPairs, 38 NumberOfFragments, 155 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 91.4ms HoareSimplificationTime, 20 FomulaSimplificationsInter, 362 FormulaSimplificationTreeSizeReductionInter, 251.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((2 <= i && i + k <= 2) && 1 <= i + k) || ((k <= 1 && 0 <= k) && i == 1) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: ((2 <= i && i + k <= 2) && 1 <= i + k) || i == 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...