/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-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:35:09,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:35:09,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:35:09,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:35:09,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:35:09,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:35:09,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:35:09,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:35:09,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:35:09,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:35:09,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:35:09,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:35:09,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:35:09,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:35:09,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:35:09,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:35:09,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:35:09,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:35:09,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:35:09,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:35:09,276 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 11:35:09,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:35:09,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:35:09,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:35:09,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:35:09,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:35:09,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:35:09,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:35:09,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:35:09,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:35:09,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:35:09,291 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:35:09,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:35:09,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:35:09,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:35:09,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:35:09,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:35:09,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:35:09,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:35:09,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:35:09,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:35:09,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:35:09,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:35:09,292 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:35:09,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:35:09,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:35:09,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:35:09,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:35:09,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:35:09,552 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:35:09,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2021-05-06 11:35:09,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ef3385a/5ad496f8de4d4b6193fdb4cf02e702dd/FLAGc4bf5f208 [2021-05-06 11:35:09,897 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:35:09,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2021-05-06 11:35:09,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ef3385a/5ad496f8de4d4b6193fdb4cf02e702dd/FLAGc4bf5f208 [2021-05-06 11:35:10,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ef3385a/5ad496f8de4d4b6193fdb4cf02e702dd [2021-05-06 11:35:10,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:35:10,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:35:10,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:10,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:35:10,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:35:10,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1057017e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10, skipping insertion in model container [2021-05-06 11:35:10,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:35:10,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:35:10,421 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-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-05-06 11:35:10,424 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-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-05-06 11:35:10,425 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-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-05-06 11:35:10,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:10,432 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:35:10,463 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-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-05-06 11:35:10,464 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-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-05-06 11:35:10,468 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-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-05-06 11:35:10,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:10,478 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:35:10,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10 WrapperNode [2021-05-06 11:35:10,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:10,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:35:10,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:35:10,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:35:10,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (1/1) ... [2021-05-06 11:35:10,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:35:10,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:35:10,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:35:10,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:35:10,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (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 11:35:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:35:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:35:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:35:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:35:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:35:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:35:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:35:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:35:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:35:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:35:10,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:35:10,730 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 11:35:10,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:10 BoogieIcfgContainer [2021-05-06 11:35:10,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:35:10,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:35:10,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:35:10,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:35:10,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:35:10" (1/3) ... [2021-05-06 11:35:10,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c758332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:10, skipping insertion in model container [2021-05-06 11:35:10,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:10" (2/3) ... [2021-05-06 11:35:10,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c758332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:10, skipping insertion in model container [2021-05-06 11:35:10,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:10" (3/3) ... [2021-05-06 11:35:10,735 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2021-05-06 11:35:10,739 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:35:10,741 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-05-06 11:35:10,751 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-06 11:35:10,763 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:35:10,763 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:35:10,763 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:35:10,764 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:35:10,764 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:35:10,764 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:35:10,764 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:35:10,764 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:35:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:35:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-05-06 11:35:10,776 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:10,777 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:10,777 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash 557366739, now seen corresponding path program 1 times [2021-05-06 11:35:10,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:10,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99717956] [2021-05-06 11:35:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:10,821 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:10,973 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 11:35:10,974 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:10,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99717956] [2021-05-06 11:35:10,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [99717956] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:10,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:10,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 11:35:10,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517083352] [2021-05-06 11:35:10,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 11:35:10,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:10,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 11:35:10,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:35:10,987 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:11,166 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-05-06 11:35:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:35:11,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-05-06 11:35:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:11,174 INFO L225 Difference]: With dead ends: 30 [2021-05-06 11:35:11,174 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 11:35:11,176 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-06 11:35:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 11:35:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-06 11:35:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-05-06 11:35:11,211 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2021-05-06 11:35:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:11,212 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-05-06 11:35:11,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-05-06 11:35:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 11:35:11,212 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:11,212 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:11,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:35:11,213 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:11,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1241381707, now seen corresponding path program 1 times [2021-05-06 11:35:11,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:11,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362491340] [2021-05-06 11:35:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:11,215 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:11,274 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 11:35:11,275 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:11,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362491340] [2021-05-06 11:35:11,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [362491340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:11,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:11,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 11:35:11,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528441943] [2021-05-06 11:35:11,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 11:35:11,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:11,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 11:35:11,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:35:11,277 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:11,344 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 11:35:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 11:35:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 11:35:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:11,345 INFO L225 Difference]: With dead ends: 19 [2021-05-06 11:35:11,345 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 11:35:11,346 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:35:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 11:35:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-06 11:35:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-06 11:35:11,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-06 11:35:11,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:11,357 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-06 11:35:11,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:11,357 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-06 11:35:11,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 11:35:11,358 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:11,358 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:11,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:35:11,359 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:11,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1033184217, now seen corresponding path program 1 times [2021-05-06 11:35:11,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:11,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592774142] [2021-05-06 11:35:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:11,369 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:11,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:11,450 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 11:35:11,450 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:11,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592774142] [2021-05-06 11:35:11,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1592774142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:11,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:11,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:35:11,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771183185] [2021-05-06 11:35:11,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:35:11,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:11,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:35:11,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:35:11,451 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:11,696 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-05-06 11:35:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:35:11,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 11:35:11,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:11,697 INFO L225 Difference]: With dead ends: 25 [2021-05-06 11:35:11,697 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:35:11,698 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 218.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:35:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:35:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:35:11,698 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 11:35:11,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:35:11,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-06 11:35:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:11,698 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:35:11,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:11,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:35:11,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:35:11,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:35:11,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:35:12,135 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-05-06 11:35:12,135 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-05-06 11:35:12,135 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-05-06 11:35:12,135 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:35:12,137 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__return_100~0 |old(~__return_100~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-06 11:35:12,137 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:35:12,137 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:35:12,137 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:35:12,140 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:35:12,140 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:35:12,143 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-05-06 11:35:12,143 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-05-06 11:35:12,149 INFO L198 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-05-06 11:35:12,149 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-05-06 11:35:12,149 INFO L194 CegarLoopUtils]: At program point L33(lines 33 89) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (= main_~__VERIFIER_assert__cond~0 1)) [2021-05-06 11:35:12,149 INFO L194 CegarLoopUtils]: At program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) the Hoare annotation is: false [2021-05-06 11:35:12,149 INFO L194 CegarLoopUtils]: At program point L64(line 64) the Hoare annotation is: false [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point L95(lines 14 102) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point L62(lines 62 70) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point mainEXIT(lines 13 102) the Hoare annotation is: (or (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point L48(line 48) the Hoare annotation is: false [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point L79(lines 52 87) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point L46(lines 46 87) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (< 0 (+ main_~main__i~0 1))) (.cse2 (< main_~main__i~0 main_~main__nlen~0)) (.cse3 (not (= main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse0 (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1) .cse3))) [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point mainFINAL(lines 13 102) the Hoare annotation is: (or (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (< 0 (+ main_~main__i~0 1))) (.cse2 (< main_~main__i~0 main_~main__nlen~0))) (or (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1)) (and .cse0 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 .cse2))) [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) the Hoare annotation is: false [2021-05-06 11:35:12,150 INFO L194 CegarLoopUtils]: At program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) the Hoare annotation is: false [2021-05-06 11:35:12,151 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 13 102) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2021-05-06 11:35:12,151 INFO L194 CegarLoopUtils]: At program point L26(lines 26 96) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0)) [2021-05-06 11:35:12,151 INFO L194 CegarLoopUtils]: At program point L76(lines 76 85) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (< 0 (+ main_~main__i~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2021-05-06 11:35:12,151 INFO L194 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: false [2021-05-06 11:35:12,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:35:12 BoogieIcfgContainer [2021-05-06 11:35:12,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:35:12,163 INFO L168 Benchmark]: Toolchain (without parser) took 1842.04 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 151.3 MB in the beginning and 148.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 85.2 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:12,163 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 186.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:35:12,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.54 ms. Allocated memory is still 186.6 MB. Free memory was 151.1 MB in the beginning and 168.9 MB in the end (delta: -17.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:12,164 INFO L168 Benchmark]: Boogie Preprocessor took 32.31 ms. Allocated memory is still 186.6 MB. Free memory was 168.9 MB in the beginning and 167.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:12,164 INFO L168 Benchmark]: RCFGBuilder took 218.38 ms. Allocated memory is still 186.6 MB. Free memory was 167.5 MB in the beginning and 152.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:12,165 INFO L168 Benchmark]: TraceAbstraction took 1430.44 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 151.8 MB in the beginning and 148.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:12,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 186.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 157.54 ms. Allocated memory is still 186.6 MB. Free memory was 151.1 MB in the beginning and 168.9 MB in the end (delta: -17.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.31 ms. Allocated memory is still 186.6 MB. Free memory was 168.9 MB in the beginning and 167.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 218.38 ms. Allocated memory is still 186.6 MB. Free memory was 167.5 MB in the beginning and 152.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1430.44 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 151.8 MB in the beginning and 148.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 64]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 48]: 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, 31 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 937.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.7ms, AutomataDifference: 513.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 435.4ms, InitialAbstractionConstructionTime: 6.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 83 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 432.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 37.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 39 NumberOfFragments, 245 HoareAnnotationTreeSize, 24 FomulaSimplifications, 769 FormulaSimplificationTreeSizeReduction, 65.5ms HoareSimplificationTime, 24 FomulaSimplificationsInter, 496 FormulaSimplificationTreeSizeReductionInter, 361.1ms 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 3 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((\old(__return_100) == __return_100 && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i < main__nlen) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((\old(__return_100) == __return_100 && 0 < main__i + 1) && main__i < main__nlen) && __VERIFIER_assert__cond == 1) || ((((\old(__return_100) == __return_100 && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i < main__nlen) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: \old(__return_100) == __return_100 || !(__VERIFIER_assert__cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...