/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 0.1.25-72570d3 [2020-08-22 18:48:52,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:48:52,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:48:52,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:48:52,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:48:52,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:48:52,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:48:52,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:48:52,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:48:52,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:48:52,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:48:52,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:48:52,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:48:52,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:48:52,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:48:52,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:48:52,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:48:52,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:48:52,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:48:52,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:48:52,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:48:52,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:48:52,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:48:52,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:48:52,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:48:52,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:48:52,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:48:52,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:48:52,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:48:52,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:48:52,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:48:52,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:48:52,604 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:48:52,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:48:52,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:48:52,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:48:52,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:48:52,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:48:52,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:48:52,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:48:52,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:48:52,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:48:52,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:48:52,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:48:52,608 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:48:52,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:48:52,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:48:52,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:48:52,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:48:52,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:48:52,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:48:52,609 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:48:52,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:48:52,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:48:52,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:48:52,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:48:52,972 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:48:52,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-08-22 18:48:53,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da0efd56/4018ba1a0075414bb83f4f1952a0e388/FLAGf2663646d [2020-08-22 18:48:53,557 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:48:53,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-08-22 18:48:53,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da0efd56/4018ba1a0075414bb83f4f1952a0e388/FLAGf2663646d [2020-08-22 18:48:53,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da0efd56/4018ba1a0075414bb83f4f1952a0e388 [2020-08-22 18:48:53,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:48:53,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:48:53,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:48:53,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:48:53,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:48:53,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:48:53" (1/1) ... [2020-08-22 18:48:53,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a098cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:53, skipping insertion in model container [2020-08-22 18:48:53,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:48:53" (1/1) ... [2020-08-22 18:48:53,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:48:53,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:48:54,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:48:54,127 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:48:54,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:48:54,156 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:48:54,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54 WrapperNode [2020-08-22 18:48:54,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:48:54,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:48:54,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:48:54,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:48:54,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (1/1) ... [2020-08-22 18:48:54,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (1/1) ... [2020-08-22 18:48:54,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (1/1) ... [2020-08-22 18:48:54,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (1/1) ... [2020-08-22 18:48:54,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (1/1) ... [2020-08-22 18:48:54,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (1/1) ... [2020-08-22 18:48:54,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (1/1) ... [2020-08-22 18:48:54,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:48:54,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:48:54,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:48:54,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:48:54,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:48:54,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:48:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:48:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-22 18:48:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-08-22 18:48:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:48:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 18:48:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:48:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-22 18:48:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-08-22 18:48:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:48:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:48:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:48:54,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:48:54,602 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 18:48:54,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:48:54 BoogieIcfgContainer [2020-08-22 18:48:54,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:48:54,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:48:54,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:48:54,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:48:54,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:48:53" (1/3) ... [2020-08-22 18:48:54,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fffa490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:48:54, skipping insertion in model container [2020-08-22 18:48:54,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:48:54" (2/3) ... [2020-08-22 18:48:54,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fffa490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:48:54, skipping insertion in model container [2020-08-22 18:48:54,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:48:54" (3/3) ... [2020-08-22 18:48:54,624 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-08-22 18:48:54,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:48:54,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:48:54,672 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:48:54,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:48:54,702 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:48:54,702 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:48:54,703 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:48:54,703 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:48:54,703 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:48:54,704 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:48:54,704 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:48:54,721 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-08-22 18:48:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 18:48:54,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:48:54,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:48:54,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:48:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:48:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-08-22 18:48:54,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:48:54,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689577219] [2020-08-22 18:48:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:48:54,837 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:48:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:48:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 18:48:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:48:55,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689577219] [2020-08-22 18:48:55,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:48:55,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:48:55,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100176829] [2020-08-22 18:48:55,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:48:55,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:48:55,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:48:55,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:48:55,198 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-08-22 18:48:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:48:55,290 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-08-22 18:48:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:48:55,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 18:48:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:48:55,308 INFO L225 Difference]: With dead ends: 51 [2020-08-22 18:48:55,308 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 18:48:55,313 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 [2020-08-22 18:48:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 18:48:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-22 18:48:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 18:48:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-08-22 18:48:55,381 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-08-22 18:48:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:48:55,382 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-08-22 18:48:55,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:48:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-08-22 18:48:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 18:48:55,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:48:55,385 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] [2020-08-22 18:48:55,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:48:55,386 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:48:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:48:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-08-22 18:48:55,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:48:55,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888869642] [2020-08-22 18:48:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:48:55,391 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:48:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:48:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 18:48:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:48:55,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888869642] [2020-08-22 18:48:55,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:48:55,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 18:48:55,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498884543] [2020-08-22 18:48:55,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 18:48:55,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:48:55,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 18:48:55,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:48:55,626 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-08-22 18:48:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:48:55,752 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-08-22 18:48:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:48:55,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-08-22 18:48:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:48:55,756 INFO L225 Difference]: With dead ends: 66 [2020-08-22 18:48:55,756 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 18:48:55,759 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 [2020-08-22 18:48:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 18:48:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-08-22 18:48:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 18:48:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-22 18:48:55,777 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-08-22 18:48:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:48:55,777 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-22 18:48:55,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 18:48:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-22 18:48:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 18:48:55,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:48:55,780 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] [2020-08-22 18:48:55,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:48:55,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:48:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:48:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-08-22 18:48:55,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:48:55,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280914633] [2020-08-22 18:48:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:48:55,815 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:48:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:48:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 18:48:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:55,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 18:48:56,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280914633] [2020-08-22 18:48:56,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:48:56,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:48:56,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847746915] [2020-08-22 18:48:56,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:48:56,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:48:56,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:48:56,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:48:56,049 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-08-22 18:48:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:48:56,149 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-08-22 18:48:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:48:56,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 18:48:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:48:56,152 INFO L225 Difference]: With dead ends: 69 [2020-08-22 18:48:56,152 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 18:48:56,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:48:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 18:48:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-08-22 18:48:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 18:48:56,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-08-22 18:48:56,167 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-08-22 18:48:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:48:56,167 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-08-22 18:48:56,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:48:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-08-22 18:48:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 18:48:56,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:48:56,169 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] [2020-08-22 18:48:56,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:48:56,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:48:56,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:48:56,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1477652418, now seen corresponding path program 1 times [2020-08-22 18:48:56,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:48:56,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792413549] [2020-08-22 18:48:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:48:56,178 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:48:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:48:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 18:48:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 18:48:56,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792413549] [2020-08-22 18:48:56,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:48:56,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:48:56,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692161860] [2020-08-22 18:48:56,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:48:56,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:48:56,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:48:56,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:48:56,293 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2020-08-22 18:48:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:48:56,330 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-08-22 18:48:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:48:56,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 18:48:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:48:56,333 INFO L225 Difference]: With dead ends: 54 [2020-08-22 18:48:56,333 INFO L226 Difference]: Without dead ends: 49 [2020-08-22 18:48:56,334 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 [2020-08-22 18:48:56,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-22 18:48:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-08-22 18:48:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 18:48:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-08-22 18:48:56,345 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-08-22 18:48:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:48:56,346 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-08-22 18:48:56,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:48:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-08-22 18:48:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 18:48:56,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:48:56,348 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] [2020-08-22 18:48:56,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:48:56,348 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:48:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:48:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-08-22 18:48:56,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:48:56,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880545846] [2020-08-22 18:48:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:48:56,357 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:48:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:48:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 18:48:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 18:48:56,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880545846] [2020-08-22 18:48:56,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:48:56,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 18:48:56,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806600897] [2020-08-22 18:48:56,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 18:48:56,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:48:56,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 18:48:56,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:48:56,584 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-08-22 18:48:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:48:56,788 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-08-22 18:48:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:48:56,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-08-22 18:48:56,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:48:56,790 INFO L225 Difference]: With dead ends: 92 [2020-08-22 18:48:56,791 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 18:48:56,792 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 [2020-08-22 18:48:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 18:48:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-08-22 18:48:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-22 18:48:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-08-22 18:48:56,804 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 34 [2020-08-22 18:48:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:48:56,804 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-08-22 18:48:56,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 18:48:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-08-22 18:48:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 18:48:56,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:48:56,807 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] [2020-08-22 18:48:56,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:48:56,807 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:48:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:48:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-08-22 18:48:56,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:48:56,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9246485] [2020-08-22 18:48:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:48:56,816 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:48:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:48:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 18:48:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:56,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 18:48:57,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9246485] [2020-08-22 18:48:57,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:48:57,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 18:48:57,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102373770] [2020-08-22 18:48:57,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 18:48:57,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:48:57,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 18:48:57,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:48:57,057 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 11 states. [2020-08-22 18:48:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:48:57,276 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-08-22 18:48:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:48:57,277 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-08-22 18:48:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:48:57,278 INFO L225 Difference]: With dead ends: 99 [2020-08-22 18:48:57,279 INFO L226 Difference]: Without dead ends: 73 [2020-08-22 18:48:57,280 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 [2020-08-22 18:48:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-08-22 18:48:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-08-22 18:48:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-08-22 18:48:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-08-22 18:48:57,293 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 43 [2020-08-22 18:48:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:48:57,294 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-08-22 18:48:57,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 18:48:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-08-22 18:48:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 18:48:57,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:48:57,296 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] [2020-08-22 18:48:57,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:48:57,297 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:48:57,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:48:57,297 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-08-22 18:48:57,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:48:57,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455490182] [2020-08-22 18:48:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:48:57,306 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:48:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:48:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 18:48:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:48:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:48:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-22 18:48:57,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455490182] [2020-08-22 18:48:57,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:48:57,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 18:48:57,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001654446] [2020-08-22 18:48:57,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 18:48:57,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:48:57,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 18:48:57,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:48:57,554 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-08-22 18:48:57,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:48:57,722 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-08-22 18:48:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:48:57,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-08-22 18:48:57,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:48:57,723 INFO L225 Difference]: With dead ends: 81 [2020-08-22 18:48:57,723 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 18:48:57,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:48:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 18:48:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 18:48:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 18:48:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 18:48:57,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-08-22 18:48:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:48:57,727 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 18:48:57,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 18:48:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 18:48:57,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 18:48:57,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:48:57,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 18:48:58,221 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 18:48:58,221 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 18:48:58,222 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|))) [2020-08-22 18:48:58,222 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))) [2020-08-22 18:48:58,223 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))) [2020-08-22 18:48:58,223 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-22 18:48:58,224 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)) [2020-08-22 18:48:58,224 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 18:48:58,224 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))) [2020-08-22 18:48:58,224 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-08-22 18:48:58,224 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))) [2020-08-22 18:48:58,225 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|))) [2020-08-22 18:48:58,225 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-08-22 18:48:58,225 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 18:48:58,225 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 18:48:58,226 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 18:48:58,226 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 18:48:58,226 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) the Hoare annotation is: false [2020-08-22 18:48:58,227 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-08-22 18:48:58,227 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: false [2020-08-22 18:48:58,227 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 21 27) the Hoare annotation is: true [2020-08-22 18:48:58,227 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))) [2020-08-22 18:48:58,228 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-08-22 18:48:58,228 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-08-22 18:48:58,228 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|))) [2020-08-22 18:48:58,228 INFO L271 CegarLoopResult]: At program point L24-2(lines 21 27) the Hoare annotation is: true [2020-08-22 18:48:58,229 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))) [2020-08-22 18:48:58,229 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))) [2020-08-22 18:48:58,229 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))) [2020-08-22 18:48:58,229 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-08-22 18:48:58,230 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))) [2020-08-22 18:48:58,230 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))) [2020-08-22 18:48:58,230 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-08-22 18:48:58,234 INFO L271 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: true [2020-08-22 18:48:58,234 INFO L271 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-08-22 18:48:58,234 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))) [2020-08-22 18:48:58,234 INFO L271 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: true [2020-08-22 18:48:58,235 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))) [2020-08-22 18:48:58,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:48:58 BoogieIcfgContainer [2020-08-22 18:48:58,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:48:58,279 INFO L168 Benchmark]: Toolchain (without parser) took 4370.72 ms. Allocated memory was 138.4 MB in the beginning and 249.0 MB in the end (delta: 110.6 MB). Free memory was 101.8 MB in the beginning and 205.1 MB in the end (delta: -103.3 MB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:48:58,287 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:48:58,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.26 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:48:58,289 INFO L168 Benchmark]: Boogie Preprocessor took 134.39 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 92.0 MB in the beginning and 181.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:48:58,290 INFO L168 Benchmark]: RCFGBuilder took 321.20 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 168.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:48:58,291 INFO L168 Benchmark]: TraceAbstraction took 3658.72 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 167.4 MB in the beginning and 205.1 MB in the end (delta: -37.7 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:48:58,306 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.26 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.39 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 92.0 MB in the beginning and 181.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.20 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 168.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3658.72 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 167.4 MB in the beginning and 205.1 MB in the end (delta: -37.7 MB). Peak memory consumption was 118.2 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: 3.0s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, 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, 1.1s 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, 0.1s 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...