/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:28:56,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:28:56,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:28:56,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:28:56,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:28:56,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:28:56,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:28:56,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:28:56,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:28:56,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:28:56,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:28:56,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:28:56,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:28:56,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:28:56,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:28:56,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:28:56,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:28:56,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:28:56,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:28:56,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:28:56,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:28:56,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:28:56,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:28:56,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:28:56,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:28:56,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:28:56,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:28:56,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:28:56,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:28:56,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:28:56,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:28:56,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:28:56,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:28:56,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:28:56,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:28:56,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:28:56,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:28:56,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:28:56,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:28:56,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:28:56,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:28:56,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:28:56,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:28:56,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:28:56,347 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:28:56,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:28:56,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:28:56,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:28:56,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:28:56,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:28:56,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:28:56,349 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:28:56,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:28:56,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:28:56,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:28:56,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:28:56,836 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:28:56,838 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2020-09-04 16:28:56,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0962941c/a517f799a5844055b3dfa8fa4cacedce/FLAG2d22b4ca2 [2020-09-04 16:28:57,546 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:28:57,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2020-09-04 16:28:57,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0962941c/a517f799a5844055b3dfa8fa4cacedce/FLAG2d22b4ca2 [2020-09-04 16:28:57,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0962941c/a517f799a5844055b3dfa8fa4cacedce [2020-09-04 16:28:57,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:28:57,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:28:57,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:28:57,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:28:57,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:28:57,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:28:57" (1/1) ... [2020-09-04 16:28:57,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3250662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:57, skipping insertion in model container [2020-09-04 16:28:57,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:28:57" (1/1) ... [2020-09-04 16:28:57,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:28:57,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:28:58,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:28:58,142 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:28:58,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:28:58,181 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:28:58,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58 WrapperNode [2020-09-04 16:28:58,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:28:58,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:28:58,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:28:58,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:28:58,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (1/1) ... [2020-09-04 16:28:58,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (1/1) ... [2020-09-04 16:28:58,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (1/1) ... [2020-09-04 16:28:58,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (1/1) ... [2020-09-04 16:28:58,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (1/1) ... [2020-09-04 16:28:58,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (1/1) ... [2020-09-04 16:28:58,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (1/1) ... [2020-09-04 16:28:58,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:28:58,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:28:58,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:28:58,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:28:58,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:28:58,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:28:58,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:28:58,392 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-04 16:28:58,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:28:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 16:28:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:28:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-04 16:28:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:28:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:28:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:28:58,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:28:58,614 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:28:58,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:28:58 BoogieIcfgContainer [2020-09-04 16:28:58,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:28:58,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:28:58,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:28:58,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:28:58,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:28:57" (1/3) ... [2020-09-04 16:28:58,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d27346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:28:58, skipping insertion in model container [2020-09-04 16:28:58,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:58" (2/3) ... [2020-09-04 16:28:58,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d27346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:28:58, skipping insertion in model container [2020-09-04 16:28:58,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:28:58" (3/3) ... [2020-09-04 16:28:58,664 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2020-09-04 16:28:58,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:28:58,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:28:58,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:28:58,763 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:28:58,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:28:58,763 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:28:58,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:28:58,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:28:58,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:28:58,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:28:58,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:28:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-04 16:28:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 16:28:58,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:58,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:58,800 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:58,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1920796714, now seen corresponding path program 1 times [2020-09-04 16:28:58,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:58,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756759325] [2020-09-04 16:28:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:58,891 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:28:59,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756759325] [2020-09-04 16:28:59,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:59,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:28:59,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68097301] [2020-09-04 16:28:59,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:28:59,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:59,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:28:59,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:28:59,177 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-04 16:28:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:59,284 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-09-04 16:28:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:28:59,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-04 16:28:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:59,302 INFO L225 Difference]: With dead ends: 40 [2020-09-04 16:28:59,303 INFO L226 Difference]: Without dead ends: 25 [2020-09-04 16:28:59,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:28:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-04 16:28:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-04 16:28:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-04 16:28:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-04 16:28:59,367 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2020-09-04 16:28:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:59,367 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-04 16:28:59,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:28:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-04 16:28:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 16:28:59,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:59,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:59,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:28:59,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1151880470, now seen corresponding path program 1 times [2020-09-04 16:28:59,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:59,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780758490] [2020-09-04 16:28:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:59,377 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:28:59,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780758490] [2020-09-04 16:28:59,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:59,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:28:59,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544312683] [2020-09-04 16:28:59,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:28:59,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:59,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:28:59,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:28:59,616 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2020-09-04 16:28:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:59,760 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-04 16:28:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 16:28:59,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-04 16:28:59,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:59,763 INFO L225 Difference]: With dead ends: 46 [2020-09-04 16:28:59,763 INFO L226 Difference]: Without dead ends: 31 [2020-09-04 16:28:59,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:28:59,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-04 16:28:59,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-04 16:28:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-04 16:28:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-09-04 16:28:59,777 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 25 [2020-09-04 16:28:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:59,777 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-09-04 16:28:59,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:28:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-09-04 16:28:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 16:28:59,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:59,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:59,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:28:59,780 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash 860037162, now seen corresponding path program 2 times [2020-09-04 16:28:59,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:59,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792115591] [2020-09-04 16:28:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:59,784 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 16:29:00,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792115591] [2020-09-04 16:29:00,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:00,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:29:00,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477281883] [2020-09-04 16:29:00,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:29:00,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:00,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:29:00,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:29:00,182 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 11 states. [2020-09-04 16:29:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:00,384 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-09-04 16:29:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:29:00,385 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-04 16:29:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:00,387 INFO L225 Difference]: With dead ends: 54 [2020-09-04 16:29:00,387 INFO L226 Difference]: Without dead ends: 39 [2020-09-04 16:29:00,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-04 16:29:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-04 16:29:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-04 16:29:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-04 16:29:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-09-04 16:29:00,400 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2020-09-04 16:29:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:00,400 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-09-04 16:29:00,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:29:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-09-04 16:29:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 16:29:00,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:00,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:00,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:29:00,403 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:00,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1953505858, now seen corresponding path program 3 times [2020-09-04 16:29:00,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:00,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372837455] [2020-09-04 16:29:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:00,407 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:29:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 16:29:00,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372837455] [2020-09-04 16:29:00,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:00,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:29:00,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511354720] [2020-09-04 16:29:00,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:29:00,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:00,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:29:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:29:00,766 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 11 states. [2020-09-04 16:29:00,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:00,952 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-09-04 16:29:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:29:00,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-09-04 16:29:00,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:00,953 INFO L225 Difference]: With dead ends: 45 [2020-09-04 16:29:00,954 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 16:29:00,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:29:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 16:29:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 16:29:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 16:29:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 16:29:00,956 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-09-04 16:29:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:00,956 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 16:29:00,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:29:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 16:29:00,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 16:29:00,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:29:00,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 16:29:01,407 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:29:01,408 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:29:01,408 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:29:01,408 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:29:01,408 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 16:29:01,409 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:29:01,409 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2020-09-04 16:29:01,409 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-04 16:29:01,409 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 17) the Hoare annotation is: true [2020-09-04 16:29:01,409 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-09-04 16:29:01,410 INFO L264 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (and (<= main_~result~0 2) (< 0 (+ (div main_~result~0 4294967296) 1))) [2020-09-04 16:29:01,410 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-04 16:29:01,410 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-09-04 16:29:01,410 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (or (and (<= 0 |main_#t~ret2|) (<= |main_#t~ret2| 0)) (and (<= |main_#t~ret2| 2) (<= 2 |main_#t~ret2|)) (and (<= |main_#t~ret2| 1) (<= 1 |main_#t~ret2|))) [2020-09-04 16:29:01,410 INFO L271 CegarLoopResult]: At program point L14-2(lines 11 17) the Hoare annotation is: true [2020-09-04 16:29:01,411 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (< 0 (+ (div main_~result~0 4294967296) 1)))) (or (and (<= 0 |main_#t~ret2|) (<= |main_#t~ret2| 0) (<= main_~result~0 0) .cse0) (and (<= |main_#t~ret2| 1) (<= 1 |main_#t~ret2|) (<= main_~result~0 1) .cse0) (and (<= main_~result~0 2) (<= |main_#t~ret2| 2) .cse0 (<= 2 |main_#t~ret2|)))) [2020-09-04 16:29:01,411 INFO L264 CegarLoopResult]: At program point idFINAL(lines 4 9) the Hoare annotation is: (let ((.cse0 (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0))) (.cse1 (and (<= 0 |id_#res|) (<= |id_#res| 0)))) (and (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) .cse0 .cse1) (or .cse0 .cse1 (and (<= 2 |id_#res|) (<= |id_#res| 2))))) [2020-09-04 16:29:01,412 INFO L264 CegarLoopResult]: At program point idEXIT(lines 4 9) the Hoare annotation is: (let ((.cse0 (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0))) (.cse1 (and (<= 0 |id_#res|) (<= |id_#res| 0)))) (and (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) .cse0 .cse1) (or .cse0 .cse1 (and (<= 2 |id_#res|) (<= |id_#res| 2))))) [2020-09-04 16:29:01,412 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-04 16:29:01,412 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2020-09-04 16:29:01,412 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2020-09-04 16:29:01,412 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-04 16:29:01,413 INFO L264 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) [2020-09-04 16:29:01,413 INFO L271 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: true [2020-09-04 16:29:01,413 INFO L264 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: (or (and (<= 1 |id_#t~ret0|) (<= |id_#t~ret0| 1)) (and (<= |id_#t~ret0| 2) (<= 2 |id_#t~ret0|)) (and (<= 0 |id_#t~ret0|) (<= |id_#t~ret0| 0))) [2020-09-04 16:29:01,413 INFO L271 CegarLoopResult]: At program point L5-1(line 5) the Hoare annotation is: true [2020-09-04 16:29:01,413 INFO L264 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: (or (and (<= |id_#t~ret0| 2) (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0) (<= 2 |id_#t~ret0|)) (and (<= 0 |id_#t~ret0|) (<= |id_#t~ret0| 0) (<= id_~ret~0 1) (<= 1 id_~ret~0)) (and (<= id_~ret~0 2) (<= 1 |id_#t~ret0|) (<= |id_#t~ret0| 1) (<= 2 id_~ret~0))) [2020-09-04 16:29:01,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:29:01 BoogieIcfgContainer [2020-09-04 16:29:01,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:29:01,442 INFO L168 Benchmark]: Toolchain (without parser) took 3548.43 ms. Allocated memory was 144.2 MB in the beginning and 249.6 MB in the end (delta: 105.4 MB). Free memory was 102.2 MB in the beginning and 213.6 MB in the end (delta: -111.4 MB). Peak memory consumption was 111.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:01,443 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 16:29:01,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.34 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 92.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:01,445 INFO L168 Benchmark]: Boogie Preprocessor took 31.23 ms. Allocated memory is still 144.2 MB. Free memory was 92.6 MB in the beginning and 91.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:01,446 INFO L168 Benchmark]: RCFGBuilder took 406.43 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.3 MB in the beginning and 169.3 MB in the end (delta: -78.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:01,447 INFO L168 Benchmark]: TraceAbstraction took 2800.89 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 168.6 MB in the beginning and 213.6 MB in the end (delta: -45.0 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:01,451 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.34 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 92.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.23 ms. Allocated memory is still 144.2 MB. Free memory was 92.6 MB in the beginning and 91.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.43 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.3 MB in the beginning and 169.3 MB in the end (delta: -78.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2800.89 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 168.6 MB in the beginning and 213.6 MB in the end (delta: -45.0 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for id Derived contract for procedure id: ((((ret <= 2 && 2 <= ret) || (3 <= ret && ret / 4294967296 <= 0)) || (((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret)) || (0 <= \result && \result <= 0)) && (((((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret) || (0 <= \result && \result <= 0)) || (2 <= \result && \result <= 2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 24 SDslu, 587 SDs, 0 SdLazy, 212 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 38 PreInvPairs, 98 NumberOfFragments, 346 HoareAnnotationTreeSize, 38 FomulaSimplifications, 250 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 27 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...