/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/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:09:19,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:09:19,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:09:19,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 02:09:19,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:09:19,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:09:19,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:09:19,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:09:19,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:09:19,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:09:19,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:09:19,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:09:19,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:09:19,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:09:19,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:09:19,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:09:19,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:09:19,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:09:19,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:09:19,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:09:19,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:09:20,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:09:20,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:09:20,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:09:20,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:09:20,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:09:20,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:09:20,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:09:20,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:09:20,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:09:20,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:09:20,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:09:20,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:09:20,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:09:20,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:09:20,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:09:20,016 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:09:20,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:09:20,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:09:20,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:09:20,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:09:20,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:09:20,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:09:20,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:09:20,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:09:20,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:09:20,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:09:20,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:09:20,501 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:09:20,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-11-07 02:09:20,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fabe6ffb/9f43ee364eb04068ada6ea96a2b30df3/FLAGf7596f110 [2020-11-07 02:09:21,339 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:09:21,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-11-07 02:09:21,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fabe6ffb/9f43ee364eb04068ada6ea96a2b30df3/FLAGf7596f110 [2020-11-07 02:09:21,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fabe6ffb/9f43ee364eb04068ada6ea96a2b30df3 [2020-11-07 02:09:21,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:09:21,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:09:21,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:09:21,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:09:21,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:09:21,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4c0e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21, skipping insertion in model container [2020-11-07 02:09:21,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:09:21,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:09:21,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:09:21,916 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:09:21,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:09:21,954 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:09:21,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21 WrapperNode [2020-11-07 02:09:21,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:09:21,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:09:21,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:09:21,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:09:21,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (1/1) ... [2020-11-07 02:09:21,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:09:21,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:09:21,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:09:21,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:09:21,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (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 [2020-11-07 02:09:22,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:09:22,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:09:22,136 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:09:22,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:09:22,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:09:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:09:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:09:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:09:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:09:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:09:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:09:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:09:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:09:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:09:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:09:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:09:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:09:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:09:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:09:22,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:09:22,547 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 02:09:22,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:22 BoogieIcfgContainer [2020-11-07 02:09:22,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:09:22,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:09:22,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:09:22,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:09:22,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:09:21" (1/3) ... [2020-11-07 02:09:22,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cb08b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:22, skipping insertion in model container [2020-11-07 02:09:22,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:21" (2/3) ... [2020-11-07 02:09:22,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cb08b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:22, skipping insertion in model container [2020-11-07 02:09:22,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:22" (3/3) ... [2020-11-07 02:09:22,566 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-11-07 02:09:22,586 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:09:22,590 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:09:22,607 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:09:22,647 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:09:22,648 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:09:22,648 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:09:22,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:09:22,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:09:22,648 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:09:22,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:09:22,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:09:22,677 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-07 02:09:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-07 02:09:22,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:22,691 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, 1, 1, 1, 1, 1] [2020-11-07 02:09:22,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:22,705 INFO L82 PathProgramCache]: Analyzing trace with hash 866746179, now seen corresponding path program 1 times [2020-11-07 02:09:22,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:22,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079513777] [2020-11-07 02:09:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:22,815 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:23,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:23,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079513777] [2020-11-07 02:09:23,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:23,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 02:09:23,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429152471] [2020-11-07 02:09:23,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 02:09:23,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:23,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 02:09:23,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:09:23,661 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 9 states. [2020-11-07 02:09:24,504 WARN L194 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-11-07 02:09:24,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:24,737 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-11-07 02:09:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:09:24,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-07 02:09:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:24,748 INFO L225 Difference]: With dead ends: 77 [2020-11-07 02:09:24,749 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 02:09:24,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:09:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 02:09:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-11-07 02:09:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-07 02:09:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-07 02:09:24,815 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2020-11-07 02:09:24,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:24,816 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-07 02:09:24,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 02:09:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-07 02:09:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 02:09:24,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:24,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:09:24,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:09:24,818 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:24,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:24,819 INFO L82 PathProgramCache]: Analyzing trace with hash -7784224, now seen corresponding path program 1 times [2020-11-07 02:09:24,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:24,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003918558] [2020-11-07 02:09:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:27,043 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-07 02:09:29,251 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 02:09:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:29,709 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2020-11-07 02:09:29,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:30,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003918558] [2020-11-07 02:09:30,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:30,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:09:30,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264665090] [2020-11-07 02:09:30,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 02:09:30,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:30,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 02:09:30,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:09:30,150 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 14 states. [2020-11-07 02:09:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:31,183 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-11-07 02:09:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 02:09:31,184 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-11-07 02:09:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:31,185 INFO L225 Difference]: With dead ends: 43 [2020-11-07 02:09:31,185 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:09:31,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2020-11-07 02:09:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:09:31,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:09:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:09:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:09:31,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-11-07 02:09:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:31,189 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:09:31,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 02:09:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:09:31,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:09:31,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:09:31,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:09:31,592 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2020-11-07 02:09:31,751 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-11-07 02:09:31,976 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-11-07 02:09:32,136 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-11-07 02:09:32,327 WARN L194 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-11-07 02:09:32,528 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-11-07 02:09:32,794 WARN L194 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 25 [2020-11-07 02:09:33,138 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 25 [2020-11-07 02:09:33,194 INFO L262 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: (= main_~__VERIFIER_assert__cond~0 0) [2020-11-07 02:09:33,194 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-07 02:09:33,195 INFO L262 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: (= main_~__VERIFIER_assert__cond~0 0) [2020-11-07 02:09:33,195 INFO L262 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: (= main_~__VERIFIER_assert__cond~0 0) [2020-11-07 02:09:33,195 INFO L269 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-11-07 02:09:33,195 INFO L269 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-11-07 02:09:33,196 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:33,196 INFO L269 CegarLoopResult]: At program point L4-5(line 4) the Hoare annotation is: true [2020-11-07 02:09:33,198 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:33,198 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:09:33,198 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 02:09:33,198 INFO L262 CegarLoopResult]: 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)|) (= |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)|) (= ~__return_72~0 |old(~__return_72~0)|) (= |old(#valid)| |#valid|)) [2020-11-07 02:09:33,199 INFO L269 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-11-07 02:09:33,199 INFO L269 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-11-07 02:09:33,199 INFO L269 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-11-07 02:09:33,204 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:09:33,205 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:09:33,205 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:33,205 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:09:33,205 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:09:33,205 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-11-07 02:09:33,205 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-07 02:09:33,206 INFO L266 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-11-07 02:09:33,206 INFO L266 CegarLoopResult]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2020-11-07 02:09:33,206 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-11-07 02:09:33,207 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,207 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,208 INFO L262 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-11-07 02:09:33,208 INFO L262 CegarLoopResult]: At program point L25(lines 25 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,208 INFO L262 CegarLoopResult]: At program point mainEXIT(lines 13 70) the Hoare annotation is: (or (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-11-07 02:09:33,208 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,208 INFO L262 CegarLoopResult]: At program point L19(lines 19 69) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,208 INFO L262 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (= |old(~__return_72~0)| ~__return_72~0)) (.cse1 (<= 0 main_~main__y~0)) (.cse2 (<= main_~main__y~0 0))) (or (and (= main_~main____CPAchecker_TMP_1~0 (+ main_~main__y~0 1)) .cse0 .cse1 (= main_~main__x~0 0) .cse2 (= (+ main_~main__x~0 1) main_~main____CPAchecker_TMP_0~0)) (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 .cse2 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)))) [2020-11-07 02:09:33,209 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,209 INFO L262 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,209 INFO L262 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse1 (= |old(~__return_72~0)| ~__return_72~0)) (.cse2 (<= main_~main__y~0 0))) (or (let ((.cse0 (+ main_~main__y~0 1)) (.cse3 (+ main_~main__i~0 main_~main__y~0))) (and (= main_~main____CPAchecker_TMP_1~0 .cse0) .cse1 (= main_~main__x~0 0) (or .cse2 (<= .cse3 main_~main__j~0)) (= (+ main_~main__x~0 1) main_~main____CPAchecker_TMP_0~0) (or (< 0 .cse0) (<= main_~main__j~0 .cse3)))) (and .cse1 (<= 0 main_~main__y~0) .cse2 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)))) [2020-11-07 02:09:33,209 INFO L262 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,209 INFO L262 CegarLoopResult]: At program point mainFINAL(lines 13 70) the Hoare annotation is: (or (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-11-07 02:09:33,210 INFO L262 CegarLoopResult]: At program point L44(lines 44 66) the Hoare annotation is: (let ((.cse5 (+ main_~main__y~0 1)) (.cse0 (= |old(~__return_72~0)| ~__return_72~0))) (or (let ((.cse1 (<= main_~main__y~0 0)) (.cse4 (< 0 .cse5)) (.cse3 (+ main_~main__j~0 main_~main__x~0)) (.cse2 (+ main_~main__y~0 main_~main__i~0))) (and .cse0 (or .cse1 (<= .cse2 .cse3)) (or .cse4 (<= main_~main__j~0 .cse2)) (or (<= .cse2 main_~main__j~0) .cse1) (<= main_~main__i~0 main_~main__x~0) (or .cse4 (<= .cse3 .cse2)) (<= main_~main__x~0 main_~main__i~0))) (and (= main_~main____CPAchecker_TMP_1~0 .cse5) .cse0 (= main_~main__x~0 0) (= (+ main_~main__x~0 1) main_~main____CPAchecker_TMP_0~0)))) [2020-11-07 02:09:33,210 INFO L262 CegarLoopResult]: At program point L40(lines 30 68) the Hoare annotation is: (let ((.cse3 (+ main_~main__y~0 1)) (.cse0 (= |old(~__return_72~0)| ~__return_72~0))) (or (let ((.cse2 (+ main_~main__j~0 main_~main__x~0)) (.cse1 (+ main_~main__y~0 main_~main__i~0))) (and .cse0 (or (<= main_~main__y~0 0) (<= .cse1 .cse2)) (<= main_~main__i~0 main_~main__x~0) (or (< 0 .cse3) (<= .cse2 .cse1)) (<= main_~main__x~0 main_~main__i~0))) (let ((.cse4 (+ main_~main__x~0 1))) (and (= main_~main____CPAchecker_TMP_1~0 .cse3) .cse0 (not (= .cse4 0)) (= .cse4 main_~main____CPAchecker_TMP_0~0))))) [2020-11-07 02:09:33,210 INFO L262 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (+ main_~main__x~0 1))) (and (= |old(~__return_72~0)| ~__return_72~0) (not (= .cse0 0)) (= .cse0 main_~main____CPAchecker_TMP_0~0))) [2020-11-07 02:09:33,210 INFO L262 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (= |old(~__return_72~0)| ~__return_72~0)) (.cse2 (not (= main_~main__x~0 0)))) (or (let ((.cse1 (+ main_~main__x~0 1))) (and (= main_~main____CPAchecker_TMP_1~0 (+ main_~main__y~0 1)) .cse0 (not (= .cse1 0)) .cse2 (= .cse1 main_~main____CPAchecker_TMP_0~0))) (and .cse0 (<= main_~main__i~0 main_~main__x~0) .cse2 (<= main_~main__x~0 main_~main__i~0)))) [2020-11-07 02:09:33,211 INFO L262 CegarLoopResult]: At program point L65(line 65) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,211 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (= |old(~__return_72~0)| ~__return_72~0) (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)) [2020-11-07 02:09:33,212 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 13 70) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,212 INFO L262 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2020-11-07 02:09:33,212 INFO L262 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (and (= main_~main____CPAchecker_TMP_1~0 (+ main_~main__y~0 1)) (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__tmp_1~0 0)) (<= 0 main_~main__y~0) (= main_~main__x~0 0) (<= main_~main__y~0 0) (= (+ main_~main__x~0 1) main_~main____CPAchecker_TMP_0~0)) [2020-11-07 02:09:33,212 INFO L262 CegarLoopResult]: At program point L53-1(line 53) the Hoare annotation is: false [2020-11-07 02:09:33,212 INFO L262 CegarLoopResult]: At program point L51(lines 51 60) the Hoare annotation is: (let ((.cse0 (= |old(~__return_72~0)| ~__return_72~0)) (.cse1 (not (= main_~__tmp_1~0 0))) (.cse2 (<= 0 main_~main__y~0)) (.cse3 (<= main_~main__y~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 (not (= main_~__VERIFIER_assert__cond~0 0)) (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)) (and (= main_~main____CPAchecker_TMP_1~0 (+ main_~main__y~0 1)) .cse0 .cse1 .cse2 (= main_~main__x~0 0) .cse3 (= (+ main_~main__x~0 1) main_~main____CPAchecker_TMP_0~0)))) [2020-11-07 02:09:33,213 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,213 INFO L262 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,213 INFO L262 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= |old(~__return_72~0)| ~__return_72~0)) (.cse1 (<= 0 main_~main__y~0)) (.cse2 (<= main_~main__y~0 0))) (or (and (= main_~main____CPAchecker_TMP_1~0 (+ main_~main__y~0 1)) .cse0 .cse1 (= main_~main__x~0 0) .cse2 (= (+ main_~main__x~0 1) main_~main____CPAchecker_TMP_0~0)) (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 .cse2 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)))) [2020-11-07 02:09:33,213 INFO L262 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,214 INFO L262 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-11-07 02:09:33,215 INFO L262 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (let ((.cse1 (= |old(~__return_72~0)| ~__return_72~0)) (.cse2 (<= main_~main__y~0 0))) (or (let ((.cse0 (+ main_~main__y~0 1)) (.cse3 (+ main_~main__i~0 main_~main__y~0))) (and (= main_~main____CPAchecker_TMP_1~0 .cse0) .cse1 (= main_~main__x~0 0) (or .cse2 (<= .cse3 main_~main__j~0)) (= (+ main_~main__x~0 1) main_~main____CPAchecker_TMP_0~0) (or (< 0 .cse0) (<= main_~main__j~0 .cse3)))) (and .cse1 (<= 0 main_~main__y~0) .cse2 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)))) [2020-11-07 02:09:33,215 INFO L262 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (+ main_~main__x~0 1))) (and (= main_~main____CPAchecker_TMP_1~0 main_~main__y~0) (= |old(~__return_72~0)| ~__return_72~0) (not (= .cse0 0)) (= .cse0 main_~main____CPAchecker_TMP_0~0))) [2020-11-07 02:09:33,215 INFO L262 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (= |old(~__return_72~0)| ~__return_72~0) (= main_~main____CPAchecker_TMP_0~0 main_~main__x~0) (not (= main_~main__x~0 0))) [2020-11-07 02:09:33,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:09:33 BoogieIcfgContainer [2020-11-07 02:09:33,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:09:33,255 INFO L168 Benchmark]: Toolchain (without parser) took 11571.83 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 109.9 MB in the beginning and 109.9 MB in the end (delta: -33.9 kB). Peak memory consumption was 83.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:33,257 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:09:33,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.42 ms. Allocated memory is still 151.0 MB. Free memory was 109.3 MB in the beginning and 125.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:33,259 INFO L168 Benchmark]: Boogie Preprocessor took 38.12 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 124.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:33,261 INFO L168 Benchmark]: RCFGBuilder took 556.34 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 119.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:33,262 INFO L168 Benchmark]: TraceAbstraction took 10695.20 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.4 MB in the beginning and 109.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 92.8 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:33,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.42 ms. Allocated memory is still 151.0 MB. Free memory was 109.3 MB in the beginning and 125.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.12 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 124.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 556.34 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 119.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10695.20 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.4 MB in the beginning and 109.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 92.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 30]: Loop Invariant Derived loop invariant: ((((\old(__return_72) == __return_72 && (main__y <= 0 || main__y + main__i <= main__j + main__x)) && main__i <= main__x) && (0 < main__y + 1 || main__j + main__x <= main__y + main__i)) && main__x <= main__i) || (((main____CPAchecker_TMP_1 == main__y + 1 && \old(__return_72) == __return_72) && !(main__x + 1 == 0)) && main__x + 1 == main____CPAchecker_TMP_0) - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: __VERIFIER_assert__cond == 0 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: \old(__return_72) == __return_72 || !(__VERIFIER_assert__cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 162 SDslu, 215 SDs, 0 SdLazy, 383 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 52 LocationsWithAnnotation, 56 PreInvPairs, 79 NumberOfFragments, 628 HoareAnnotationTreeSize, 56 FomulaSimplifications, 855 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 52 FomulaSimplificationsInter, 1314 FormulaSimplificationTreeSizeReductionInter, 1.7s 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...