/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:46:06,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:46:06,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:46:06,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:46:06,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:46:06,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:46:06,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:46:06,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:46:06,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:46:06,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:46:06,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:46:06,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:46:06,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:46:06,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:46:06,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:46:06,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:46:06,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:46:06,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:46:06,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:46:06,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:46:06,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:46:06,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:46:06,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:46:06,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:46:06,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 21:46:06,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 21:46:06,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 21:46:06,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 21:46:06,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 21:46:06,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 21:46:06,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:46:06,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:46:06,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:46:06,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:46:06,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:46:06,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:46:06,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:46:06,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:46:06,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:46:06,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:46:06,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:46:06,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:46:06,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:46:06,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:46:06,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:46:06,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:46:06,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:46:06,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:46:06,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:46:06,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:46:06,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:46:06,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:46:06,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:46:06,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:46:06,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:46:06,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:46:06,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:46:06,434 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:46:06,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:46:06,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:46:06,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:06,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:46:06,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:46:06,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:46:06,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:46:06,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:46:06,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:46:06,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:46:06,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:46:06,899 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:46:06,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-10-23 21:46:06,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704631c67/959f6de19ca5414ab1ab3d2ce34d4167/FLAG109aa59ce [2020-10-23 21:46:07,628 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:46:07,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2020-10-23 21:46:07,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704631c67/959f6de19ca5414ab1ab3d2ce34d4167/FLAG109aa59ce [2020-10-23 21:46:07,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704631c67/959f6de19ca5414ab1ab3d2ce34d4167 [2020-10-23 21:46:07,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:46:07,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:46:07,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:07,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:46:07,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:46:07,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:07" (1/1) ... [2020-10-23 21:46:07,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a20cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:07, skipping insertion in model container [2020-10-23 21:46:07,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:07" (1/1) ... [2020-10-23 21:46:07,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:46:08,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:46:08,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:08,246 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:46:08,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:08,283 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:46:08,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08 WrapperNode [2020-10-23 21:46:08,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:08,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:46:08,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:46:08,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:46:08,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (1/1) ... [2020-10-23 21:46:08,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (1/1) ... [2020-10-23 21:46:08,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (1/1) ... [2020-10-23 21:46:08,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (1/1) ... [2020-10-23 21:46:08,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (1/1) ... [2020-10-23 21:46:08,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (1/1) ... [2020-10-23 21:46:08,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (1/1) ... [2020-10-23 21:46:08,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:46:08,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:46:08,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:46:08,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:46:08,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:08,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:46:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:46:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:46:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:46:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:46:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:46:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:46:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 21:46:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 21:46:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:46:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:46:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:46:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:46:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:46:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:46:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:46:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:46:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:46:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:46:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:46:08,888 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:46:08,888 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:46:08,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:08 BoogieIcfgContainer [2020-10-23 21:46:08,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:46:08,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:46:08,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:46:08,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:46:08,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:46:07" (1/3) ... [2020-10-23 21:46:08,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f17b0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:08, skipping insertion in model container [2020-10-23 21:46:08,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:08" (2/3) ... [2020-10-23 21:46:08,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f17b0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:08, skipping insertion in model container [2020-10-23 21:46:08,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:08" (3/3) ... [2020-10-23 21:46:08,904 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-10-23 21:46:08,918 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:46:08,928 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:46:08,944 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:46:08,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:46:09,009 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:46:09,009 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:46:09,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:46:09,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:46:09,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:46:09,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:46:09,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:46:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-23 21:46:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 21:46:09,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:09,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:46:09,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:09,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1000122115, now seen corresponding path program 1 times [2020-10-23 21:46:09,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:09,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905262363] [2020-10-23 21:46:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:09,158 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:09,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:46:09,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905262363] [2020-10-23 21:46:09,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:46:09,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:46:09,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756719665] [2020-10-23 21:46:09,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:46:09,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:46:09,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:46:09,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:46:09,386 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-23 21:46:09,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:46:09,487 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-23 21:46:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:46:09,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-23 21:46:09,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:46:09,498 INFO L225 Difference]: With dead ends: 54 [2020-10-23 21:46:09,499 INFO L226 Difference]: Without dead ends: 30 [2020-10-23 21:46:09,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:46:09,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-23 21:46:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-23 21:46:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 21:46:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-10-23 21:46:09,552 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-10-23 21:46:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:46:09,553 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-10-23 21:46:09,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:46:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-10-23 21:46:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 21:46:09,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:09,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:46:09,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:46:09,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:09,556 INFO L82 PathProgramCache]: Analyzing trace with hash -397720652, now seen corresponding path program 1 times [2020-10-23 21:46:09,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:09,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758379201] [2020-10-23 21:46:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:09,560 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:46:09,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758379201] [2020-10-23 21:46:09,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:46:09,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 21:46:09,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544733732] [2020-10-23 21:46:09,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 21:46:09,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:46:09,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 21:46:09,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:46:09,773 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 6 states. [2020-10-23 21:46:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:46:10,260 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-23 21:46:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:46:10,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-23 21:46:10,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:46:10,263 INFO L225 Difference]: With dead ends: 39 [2020-10-23 21:46:10,263 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 21:46:10,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 21:46:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 21:46:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-23 21:46:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 21:46:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-23 21:46:10,292 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-10-23 21:46:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:46:10,293 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-23 21:46:10,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 21:46:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-23 21:46:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 21:46:10,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:10,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:46:10,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:46:10,295 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:10,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:10,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1618316969, now seen corresponding path program 1 times [2020-10-23 21:46:10,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:10,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577410596] [2020-10-23 21:46:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:12,569 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-10-23 21:46:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:46:13,102 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-23 21:46:13,360 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-10-23 21:46:13,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577410596] [2020-10-23 21:46:13,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:46:13,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 21:46:13,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950487201] [2020-10-23 21:46:13,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 21:46:13,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:46:13,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 21:46:13,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-23 21:46:13,783 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2020-10-23 21:46:14,707 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-10-23 21:46:14,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:46:14,823 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-10-23 21:46:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 21:46:14,824 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-10-23 21:46:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:46:14,825 INFO L225 Difference]: With dead ends: 32 [2020-10-23 21:46:14,825 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 21:46:14,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2020-10-23 21:46:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 21:46:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 21:46:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 21:46:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 21:46:14,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-10-23 21:46:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:46:14,828 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 21:46:14,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 21:46:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 21:46:14,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 21:46:14,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:46:14,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 21:46:15,340 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-23 21:46:15,472 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-23 21:46:15,643 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-23 21:46:15,845 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,845 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,846 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,846 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,846 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,847 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,847 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 21:46:15,847 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 21:46:15,848 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,848 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,848 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,848 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,849 INFO L270 CegarLoopResult]: 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)|)) [2020-10-23 21:46:15,849 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 21:46:15,849 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 21:46:15,850 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 21:46:15,850 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 21:46:15,850 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 21:46:15,850 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 21:46:15,850 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= main_~sn~0 0) [2020-10-23 21:46:15,850 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 22 29) the Hoare annotation is: true [2020-10-23 21:46:15,850 INFO L277 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-10-23 21:46:15,851 INFO L277 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-10-23 21:46:15,851 INFO L270 CegarLoopResult]: At program point L25-3(lines 25 27) the Hoare annotation is: (and (or (and (<= 2 main_~i~0) (<= main_~sn~0 4) (<= main_~i~0 2) (<= 4 main_~sn~0)) (and (= main_~i~0 1) (= 2 main_~sn~0)) (and (<= (+ (div (+ main_~sn~0 (- 7)) 2) 4) main_~i~0) (<= 3 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 3)))) (<= main_~i~0 main_~n~0)) [2020-10-23 21:46:15,851 INFO L277 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: true [2020-10-23 21:46:15,851 INFO L270 CegarLoopResult]: At program point L25-4(line 25) the Hoare annotation is: (and (= |main_#t~post4| main_~i~0) (or (and (<= 2 main_~i~0) (<= main_~sn~0 4) (<= main_~i~0 2) (<= 4 main_~sn~0)) (and (= main_~i~0 1) (= 2 main_~sn~0)) (and (<= (+ (div (+ main_~sn~0 (- 7)) 2) 4) main_~i~0) (<= 3 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 3)))) (<= main_~i~0 main_~n~0)) [2020-10-23 21:46:15,851 INFO L277 CegarLoopResult]: At program point L23-3(line 23) the Hoare annotation is: true [2020-10-23 21:46:15,852 INFO L270 CegarLoopResult]: At program point L25-5(line 25) the Hoare annotation is: (and (or (and (<= |main_#t~post4| (+ (div (+ main_~sn~0 (- 6)) 2) 3)) (<= 3 |main_#t~post4|) (<= (+ (div (+ main_~sn~0 (- 7)) 2) 4) |main_#t~post4|)) (and (= 2 main_~sn~0) (= |main_#t~post4| 1)) (and (<= main_~sn~0 4) (<= |main_#t~post4| 2) (<= 4 main_~sn~0) (<= 2 |main_#t~post4|))) (= main_~i~0 (+ |main_#t~post4| 1)) (<= |main_#t~post4| main_~n~0)) [2020-10-23 21:46:15,852 INFO L270 CegarLoopResult]: At program point L25-6(lines 25 27) the Hoare annotation is: (or (and (or (and (<= main_~sn~0 4) (<= 3 main_~i~0) (<= main_~i~0 3) (<= 4 main_~sn~0)) (and (= main_~i~0 2) (= 2 main_~sn~0)) (and (<= (+ (div (+ main_~sn~0 (- 7)) 2) 5) main_~i~0) (<= 4 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 4)))) (<= main_~i~0 (+ main_~n~0 1))) (and (= main_~sn~0 0) (= main_~i~0 1))) [2020-10-23 21:46:15,852 INFO L270 CegarLoopResult]: At program point L25-7(lines 25 27) the Hoare annotation is: (or (and (or (and (<= main_~sn~0 4) (<= 3 main_~i~0) (<= main_~i~0 3) (<= 4 main_~sn~0)) (and (= main_~i~0 2) (= 2 main_~sn~0)) (and (<= (+ (div (+ main_~sn~0 (- 7)) 2) 5) main_~i~0) (<= 4 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 4)))) (< main_~n~0 main_~i~0) (<= main_~i~0 (+ main_~n~0 1))) (= main_~sn~0 0)) [2020-10-23 21:46:15,852 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 22 29) the Hoare annotation is: true [2020-10-23 21:46:15,853 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2020-10-23 21:46:15,853 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (<= main_~i~0 main_~n~0))) (or (and (= main_~sn~0 0) .cse0 (= main_~i~0 1)) (and .cse0 (or (and (<= main_~sn~0 4) (<= 3 main_~i~0) (<= main_~i~0 3) (<= 4 main_~sn~0)) (and (= main_~i~0 2) (= 2 main_~sn~0)) (and (<= (+ (div (+ main_~sn~0 (- 7)) 2) 5) main_~i~0) (<= 4 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 4))))))) [2020-10-23 21:46:15,853 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (= main_~sn~0 0) [2020-10-23 21:46:15,853 INFO L277 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: true [2020-10-23 21:46:15,853 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 21:46:15,854 INFO L270 CegarLoopResult]: At program point L16(lines 16 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 21:46:15,854 INFO L270 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 21:46:15,854 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2020-10-23 21:46:15,854 INFO L277 CegarLoopResult]: At program point L16-2(lines 15 20) the Hoare annotation is: true [2020-10-23 21:46:15,854 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 15 20) the Hoare annotation is: true [2020-10-23 21:46:15,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:46:15 BoogieIcfgContainer [2020-10-23 21:46:15,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:46:15,876 INFO L168 Benchmark]: Toolchain (without parser) took 7910.18 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 127.2 MB in the beginning and 81.0 MB in the end (delta: 46.2 MB). Peak memory consumption was 106.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:15,876 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:46:15,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:15,879 INFO L168 Benchmark]: Boogie Preprocessor took 38.63 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:15,879 INFO L168 Benchmark]: RCFGBuilder took 568.39 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 101.9 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:15,881 INFO L168 Benchmark]: TraceAbstraction took 6977.74 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 101.4 MB in the beginning and 81.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 80.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:15,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.63 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 568.39 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 101.9 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6977.74 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 101.4 MB in the beginning and 81.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 80.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((((sn <= 4 && 3 <= i) && i <= 3) && 4 <= sn) || (i == 2 && 2 == sn)) || (((sn + -7) / 2 + 5 <= i && 4 <= i) && i <= (sn + -6) / 2 + 4)) && i <= n + 1) || (sn == 0 && i == 1) - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 68 SDslu, 118 SDs, 0 SdLazy, 170 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 65 PreInvPairs, 77 NumberOfFragments, 394 HoareAnnotationTreeSize, 65 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 41 FomulaSimplificationsInter, 878 FormulaSimplificationTreeSizeReductionInter, 0.8s 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...