/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/id2_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:28:29,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:28:29,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:28:29,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:28:29,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:28:29,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:28:29,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:28:29,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:28:29,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:28:29,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:28:29,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:28:29,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:28:29,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:28:29,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:28:29,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:28:29,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:28:29,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:28:29,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:28:29,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:28:29,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:28:29,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:28:29,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:28:29,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:28:29,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:28:29,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:28:29,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:28:29,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:28:29,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:28:29,280 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 16:28:29,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:28:29,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:28:29,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:28:29,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:28:29,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:28:29,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:28:29,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:28:29,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:28:29,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:28:29,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:28:29,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:28:29,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:28:29,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:28:29,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:28:29,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:28:29,297 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:28:29,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:28:29,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:28:29,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:28:29,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:28:29,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:28:29,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:28:29,299 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:28:29,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:28:29,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:28:29,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:28:29,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:28:29,826 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:28:29,828 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-04 16:28:29,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4575717b5/9c318acc741e47e98c0605e1e3d69518/FLAGfe13b995b [2020-09-04 16:28:30,514 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:28:30,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-04 16:28:30,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4575717b5/9c318acc741e47e98c0605e1e3d69518/FLAGfe13b995b [2020-09-04 16:28:30,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4575717b5/9c318acc741e47e98c0605e1e3d69518 [2020-09-04 16:28:30,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:28:30,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:28:30,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:28:30,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:28:30,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:28:30,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:28:30" (1/1) ... [2020-09-04 16:28:30,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:30, skipping insertion in model container [2020-09-04 16:28:30,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:28:30" (1/1) ... [2020-09-04 16:28:30,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:28:30,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:28:31,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:28:31,175 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:28:31,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:28:31,219 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:28:31,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31 WrapperNode [2020-09-04 16:28:31,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:28:31,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:28:31,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:28:31,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:28:31,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (1/1) ... [2020-09-04 16:28:31,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (1/1) ... [2020-09-04 16:28:31,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (1/1) ... [2020-09-04 16:28:31,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (1/1) ... [2020-09-04 16:28:31,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (1/1) ... [2020-09-04 16:28:31,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (1/1) ... [2020-09-04 16:28:31,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (1/1) ... [2020-09-04 16:28:31,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:28:31,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:28:31,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:28:31,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:28:31,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (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 16:28:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:28:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:28:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-04 16:28:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-04 16:28:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:28:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 16:28:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:28:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-04 16:28:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-04 16:28:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:28:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:28:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:28:31,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:28:31,717 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:28:31,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:28:31 BoogieIcfgContainer [2020-09-04 16:28:31,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:28:31,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:28:31,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:28:31,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:28:31,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:28:30" (1/3) ... [2020-09-04 16:28:31,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5b3b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:28:31, skipping insertion in model container [2020-09-04 16:28:31,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:28:31" (2/3) ... [2020-09-04 16:28:31,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5b3b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:28:31, skipping insertion in model container [2020-09-04 16:28:31,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:28:31" (3/3) ... [2020-09-04 16:28:31,764 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-09-04 16:28:31,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:28:31,788 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:28:31,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:28:31,849 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:28:31,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:28:31,850 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:28:31,850 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:28:31,850 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:28:31,850 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:28:31,854 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:28:31,854 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:28:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-04 16:28:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 16:28:31,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:31,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:31,903 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:31,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-04 16:28:31,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:31,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046924522] [2020-09-04 16:28:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:31,992 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:32,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:32,247 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 16:28:32,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046924522] [2020-09-04 16:28:32,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:32,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:28:32,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319234867] [2020-09-04 16:28:32,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:28:32,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:32,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:28:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:28:32,279 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-04 16:28:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:32,389 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-04 16:28:32,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:28:32,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-04 16:28:32,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:32,406 INFO L225 Difference]: With dead ends: 51 [2020-09-04 16:28:32,407 INFO L226 Difference]: Without dead ends: 36 [2020-09-04 16:28:32,414 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 16:28:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-04 16:28:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-04 16:28:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-04 16:28:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-04 16:28:32,482 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-04 16:28:32,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:32,483 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-04 16:28:32,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:28:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-04 16:28:32,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 16:28:32,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:32,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:32,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:28:32,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:32,489 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-04 16:28:32,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:32,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524201981] [2020-09-04 16:28:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:32,492 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:32,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:32,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:32,748 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 16:28:32,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524201981] [2020-09-04 16:28:32,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:32,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:28:32,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533275450] [2020-09-04 16:28:32,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:28:32,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:32,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:28:32,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:28:32,755 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-04 16:28:32,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:32,923 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-04 16:28:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 16:28:32,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-04 16:28:32,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:32,927 INFO L225 Difference]: With dead ends: 66 [2020-09-04 16:28:32,927 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 16:28:32,932 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 16:28:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 16:28:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-04 16:28:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 16:28:32,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-04 16:28:32,946 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-04 16:28:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:32,947 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-04 16:28:32,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:28:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-04 16:28:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 16:28:32,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:32,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:32,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:28:32,950 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:32,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:32,951 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-04 16:28:32,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:32,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855373490] [2020-09-04 16:28:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:32,975 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,190 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 16:28:33,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855373490] [2020-09-04 16:28:33,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:33,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:28:33,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706842235] [2020-09-04 16:28:33,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:28:33,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:33,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:28:33,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:28:33,194 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-04 16:28:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:33,246 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-09-04 16:28:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:28:33,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-04 16:28:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:33,249 INFO L225 Difference]: With dead ends: 69 [2020-09-04 16:28:33,250 INFO L226 Difference]: Without dead ends: 50 [2020-09-04 16:28:33,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:28:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-04 16:28:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-04 16:28:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 16:28:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-04 16:28:33,264 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-04 16:28:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:33,286 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-04 16:28:33,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:28:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-04 16:28:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 16:28:33,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:33,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:33,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:28:33,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:33,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:33,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1477652418, now seen corresponding path program 1 times [2020-09-04 16:28:33,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:33,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654092159] [2020-09-04 16:28:33,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:33,297 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,419 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 16:28:33,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654092159] [2020-09-04 16:28:33,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:33,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:28:33,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166852231] [2020-09-04 16:28:33,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:28:33,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:33,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:28:33,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:28:33,423 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2020-09-04 16:28:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:33,462 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-04 16:28:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:28:33,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-04 16:28:33,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:33,465 INFO L225 Difference]: With dead ends: 54 [2020-09-04 16:28:33,465 INFO L226 Difference]: Without dead ends: 49 [2020-09-04 16:28:33,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:28:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-04 16:28:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-04 16:28:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 16:28:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-04 16:28:33,477 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-04 16:28:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:33,478 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-04 16:28:33,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:28:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-04 16:28:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 16:28:33,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:33,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:33,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:28:33,480 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:33,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-04 16:28:33,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:33,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581882789] [2020-09-04 16:28:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:33,489 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:33,756 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 16:28:33,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581882789] [2020-09-04 16:28:33,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:33,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:28:33,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806659039] [2020-09-04 16:28:33,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:28:33,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:28:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:28:33,760 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-09-04 16:28:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:33,971 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-04 16:28:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:28:33,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-04 16:28:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:33,974 INFO L225 Difference]: With dead ends: 92 [2020-09-04 16:28:33,974 INFO L226 Difference]: Without dead ends: 63 [2020-09-04 16:28:33,975 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 16:28:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-04 16:28:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-09-04 16:28:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 16:28:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-04 16:28:33,987 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 34 [2020-09-04 16:28:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:33,988 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-04 16:28:33,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:28:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-04 16:28:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 16:28:33,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:33,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:28:33,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:28:33,990 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:33,991 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-04 16:28:33,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:33,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226934208] [2020-09-04 16:28:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:33,999 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-04 16:28:34,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226934208] [2020-09-04 16:28:34,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:34,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:28:34,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457053987] [2020-09-04 16:28:34,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:28:34,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:34,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:28:34,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:28:34,339 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 11 states. [2020-09-04 16:28:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:34,563 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-09-04 16:28:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:28:34,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-09-04 16:28:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:34,565 INFO L225 Difference]: With dead ends: 99 [2020-09-04 16:28:34,565 INFO L226 Difference]: Without dead ends: 73 [2020-09-04 16:28:34,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 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 16:28:34,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-04 16:28:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-09-04 16:28:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-04 16:28:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-04 16:28:34,590 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 43 [2020-09-04 16:28:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:34,591 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-04 16:28:34,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:28:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-04 16:28:34,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-04 16:28:34,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:28:34,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:28:34,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:28:34,601 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:28:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:28:34,601 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-04 16:28:34,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:28:34,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419393103] [2020-09-04 16:28:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:28:34,610 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:28:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:28:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:28:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:28:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:28:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-04 16:28:34,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419393103] [2020-09-04 16:28:34,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:28:34,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:28:34,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918343553] [2020-09-04 16:28:34,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:28:34,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:28:34,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:28:34,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:28:34,991 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-09-04 16:28:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:28:35,168 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-09-04 16:28:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:28:35,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-04 16:28:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:28:35,169 INFO L225 Difference]: With dead ends: 81 [2020-09-04 16:28:35,169 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 16:28:35,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 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 16:28:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 16:28:35,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 16:28:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 16:28:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 16:28:35,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-09-04 16:28:35,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:28:35,172 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 16:28:35,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:28:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 16:28:35,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 16:28:35,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:28:35,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 16:28:35,749 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:28:35,750 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:28:35,750 INFO L264 CegarLoopResult]: At program point id2FINAL(lines 14 19) the Hoare annotation is: (or (and (<= 2 |id2_#res|) (<= |id2_#res| 2)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|)) (and (<= |id2_#res| 1) (<= 1 id2_~ret~1) (<= id2_~ret~1 1) (<= 1 |id2_#res|))) [2020-09-04 16:28:35,750 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (and (<= id2_~ret~1 2) (<= 2 id2_~ret~1)) (and (<= 1 id2_~ret~1) (<= id2_~ret~1 1))) [2020-09-04 16:28:35,751 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (or (and (<= id2_~ret~1 2) (<= 2 id2_~ret~1)) (and (<= 1 id2_~ret~1) (<= id2_~ret~1 1)) (and (<= 3 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0))) [2020-09-04 16:28:35,751 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-04 16:28:35,751 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (and (<= 3 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0)) [2020-09-04 16:28:35,751 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-09-04 16:28:35,751 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (or (and (<= 2 |id2_#t~ret1|) (<= |id2_#t~ret1| 2)) (and (<= |id2_#t~ret1| 1) (<= 1 |id2_#t~ret1|)) (and (<= 0 |id2_#t~ret1|) (<= |id2_#t~ret1| 0))) [2020-09-04 16:28:35,751 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-09-04 16:28:35,752 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (or (and (<= 2 |id2_#t~ret1|) (<= |id2_#t~ret1| 2) (<= 3 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0)) (and (<= 0 |id2_#t~ret1|) (<= |id2_#t~ret1| 0) (<= 1 id2_~ret~1) (<= id2_~ret~1 1)) (and (<= |id2_#t~ret1| 1) (<= 1 |id2_#t~ret1|) (<= id2_~ret~1 2) (<= 2 id2_~ret~1))) [2020-09-04 16:28:35,752 INFO L264 CegarLoopResult]: At program point id2EXIT(lines 14 19) the Hoare annotation is: (or (and (<= 2 |id2_#res|) (<= |id2_#res| 2)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|)) (and (<= |id2_#res| 1) (<= 1 id2_~ret~1) (<= id2_~ret~1 1) (<= 1 |id2_#res|))) [2020-09-04 16:28:35,752 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-04 16:28:35,752 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:28:35,753 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:28:35,754 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 16:28:35,755 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:28:35,755 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) the Hoare annotation is: false [2020-09-04 16:28:35,756 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-04 16:28:35,756 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: false [2020-09-04 16:28:35,756 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 21 27) the Hoare annotation is: true [2020-09-04 16:28:35,756 INFO L264 CegarLoopResult]: At program point L24(lines 24 26) the Hoare annotation is: (and (<= main_~result~0 2) (< 0 (+ (div main_~result~0 4294967296) 1))) [2020-09-04 16:28:35,757 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-04 16:28:35,757 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-09-04 16:28:35,757 INFO L264 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (or (and (<= |main_#t~ret3| 0) (<= 0 |main_#t~ret3|)) (and (<= 2 |main_#t~ret3|) (<= |main_#t~ret3| 2)) (and (<= |main_#t~ret3| 1) (<= 1 |main_#t~ret3|))) [2020-09-04 16:28:35,758 INFO L271 CegarLoopResult]: At program point L24-2(lines 21 27) the Hoare annotation is: true [2020-09-04 16:28:35,758 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (< 0 (+ (div main_~result~0 4294967296) 1)))) (or (and (<= |main_#t~ret3| 0) (<= main_~result~0 0) (<= 0 |main_#t~ret3|) .cse0) (and (<= 2 |main_#t~ret3|) (<= main_~result~0 2) (<= |main_#t~ret3| 2) .cse0) (and (<= |main_#t~ret3| 1) (<= main_~result~0 1) (<= 1 |main_#t~ret3|) .cse0))) [2020-09-04 16:28:35,758 INFO L264 CegarLoopResult]: At program point idFINAL(lines 7 12) the Hoare annotation is: (or (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0)) (and (<= 2 |id_#res|) (<= |id_#res| 2))) [2020-09-04 16:28:35,759 INFO L264 CegarLoopResult]: At program point idEXIT(lines 7 12) the Hoare annotation is: (or (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0)) (and (<= 2 |id_#res|) (<= |id_#res| 2))) [2020-09-04 16:28:35,759 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-04 16:28:35,759 INFO L264 CegarLoopResult]: At program point L11(line 11) 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 16:28:35,759 INFO L264 CegarLoopResult]: At program point L10(line 10) 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 16:28:35,759 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-04 16:28:35,760 INFO L271 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: true [2020-09-04 16:28:35,763 INFO L271 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-09-04 16:28:35,763 INFO L264 CegarLoopResult]: At program point L9-1(line 9) 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 16:28:35,763 INFO L271 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: true [2020-09-04 16:28:35,763 INFO L264 CegarLoopResult]: At program point L9-2(line 9) 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 16:28:35,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:28:35 BoogieIcfgContainer [2020-09-04 16:28:35,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:28:35,813 INFO L168 Benchmark]: Toolchain (without parser) took 4934.56 ms. Allocated memory was 136.8 MB in the beginning and 252.7 MB in the end (delta: 115.9 MB). Free memory was 101.2 MB in the beginning and 221.1 MB in the end (delta: -119.9 MB). Peak memory consumption was 125.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:28:35,820 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 16:28:35,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.63 ms. Allocated memory is still 136.8 MB. Free memory was 101.0 MB in the beginning and 91.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:28:35,824 INFO L168 Benchmark]: Boogie Preprocessor took 137.52 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:28:35,825 INFO L168 Benchmark]: RCFGBuilder took 366.51 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 166.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:28:35,826 INFO L168 Benchmark]: TraceAbstraction took 4066.65 ms. Allocated memory was 201.3 MB in the beginning and 252.7 MB in the end (delta: 51.4 MB). Free memory was 166.0 MB in the beginning and 221.1 MB in the end (delta: -55.1 MB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:28:35,838 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.63 ms. Allocated memory is still 136.8 MB. Free memory was 101.0 MB in the beginning and 91.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.52 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.51 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 166.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4066.65 ms. Allocated memory was 201.3 MB in the beginning and 252.7 MB in the end (delta: 51.4 MB). Free memory was 166.0 MB in the beginning and 221.1 MB in the end (delta: -55.1 MB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 14]: Procedure Contract for id2 Derived contract for procedure id2: ((2 <= \result && \result <= 2) || (\result <= 0 && 0 <= \result)) || (((\result <= 1 && 1 <= ret) && ret <= 1) && 1 <= \result) - ProcedureContractResult [Line: 21]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 7]: Procedure Contract for id Derived contract for procedure id: ((((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret) || (0 <= \result && \result <= 0)) || (2 <= \result && \result <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 277 SDtfs, 39 SDslu, 1533 SDs, 0 SdLazy, 335 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 49 PreInvPairs, 155 NumberOfFragments, 434 HoareAnnotationTreeSize, 49 FomulaSimplifications, 2528 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 38 FomulaSimplificationsInter, 155 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...