/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:11:27,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:11:27,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:11:27,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:11:27,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:11:27,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:11:27,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:11:27,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:11:27,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:11:27,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:11:27,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:11:27,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:11:27,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:11:27,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:11:27,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:11:27,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:11:27,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:11:27,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:11:27,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:11:27,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:11:27,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:11:27,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:11:27,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:11:27,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:11:27,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:11:27,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:11:27,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:11:27,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:11:27,348 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 22:11:27,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:11:27,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:11:27,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:11:27,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:11:27,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:11:27,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:11:27,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:11:27,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:11:27,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:11:27,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:11:27,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:11:27,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:11:27,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:11:27,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:11:27,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:11:27,369 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:11:27,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:11:27,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:11:27,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:11:27,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:11:27,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:11:27,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:11:27,370 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:11:27,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:11:27,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:11:27,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:11:27,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:11:27,706 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:11:27,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-08-22 22:11:27,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87583876/1135b34fa25742d78310511b9a228c0b/FLAGcb207d909 [2020-08-22 22:11:28,195 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:11:28,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-08-22 22:11:28,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87583876/1135b34fa25742d78310511b9a228c0b/FLAGcb207d909 [2020-08-22 22:11:28,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87583876/1135b34fa25742d78310511b9a228c0b [2020-08-22 22:11:28,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:11:28,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:11:28,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:11:28,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:11:28,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:11:28,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56831e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28, skipping insertion in model container [2020-08-22 22:11:28,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:11:28,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:11:28,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:11:28,873 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:11:28,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:11:28,902 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:11:28,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28 WrapperNode [2020-08-22 22:11:28,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:11:28,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:11:28,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:11:28,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:11:28,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (1/1) ... [2020-08-22 22:11:28,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:11:28,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:11:28,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:11:28,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:11:28,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (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 22:11:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:11:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:11:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-08-22 22:11:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:11:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:11:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-08-22 22:11:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:11:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:11:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:11:29,259 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:11:29,259 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 22:11:29,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:11:29 BoogieIcfgContainer [2020-08-22 22:11:29,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:11:29,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:11:29,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:11:29,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:11:29,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:11:28" (1/3) ... [2020-08-22 22:11:29,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de0efdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:11:29, skipping insertion in model container [2020-08-22 22:11:29,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:28" (2/3) ... [2020-08-22 22:11:29,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de0efdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:11:29, skipping insertion in model container [2020-08-22 22:11:29,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:11:29" (3/3) ... [2020-08-22 22:11:29,272 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2020-08-22 22:11:29,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:11:29,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:11:29,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:11:29,327 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:11:29,327 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:11:29,327 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:11:29,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:11:29,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:11:29,328 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:11:29,328 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:11:29,328 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:11:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-08-22 22:11:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 22:11:29,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:29,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:29,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-08-22 22:11:29,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:29,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740338183] [2020-08-22 22:11:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,624 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 22:11:29,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740338183] [2020-08-22 22:11:29,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:11:29,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:11:29,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378743307] [2020-08-22 22:11:29,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:11:29,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:29,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:11:29,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:11:29,706 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-08-22 22:11:29,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:29,823 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-08-22 22:11:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 22:11:29,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-22 22:11:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:29,835 INFO L225 Difference]: With dead ends: 39 [2020-08-22 22:11:29,835 INFO L226 Difference]: Without dead ends: 25 [2020-08-22 22:11:29,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 22:11:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-22 22:11:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-22 22:11:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 22:11:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-08-22 22:11:29,880 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-08-22 22:11:29,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:29,881 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-08-22 22:11:29,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:11:29,881 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-08-22 22:11:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 22:11:29,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:29,884 INFO L422 BasicCegarLoop]: trace histogram [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 22:11:29,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:11:29,885 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:29,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:29,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-08-22 22:11:29,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:29,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691919040] [2020-08-22 22:11:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 22:11:30,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691919040] [2020-08-22 22:11:30,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:30,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 22:11:30,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711361492] [2020-08-22 22:11:30,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:11:30,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:30,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:11:30,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:11:30,016 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-08-22 22:11:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:30,101 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-08-22 22:11:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:11:30,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-08-22 22:11:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:30,104 INFO L225 Difference]: With dead ends: 36 [2020-08-22 22:11:30,104 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 22:11:30,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:11:30,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 22:11:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 22:11:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 22:11:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-08-22 22:11:30,117 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-08-22 22:11:30,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:30,118 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-08-22 22:11:30,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:11:30,118 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-08-22 22:11:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 22:11:30,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:30,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:30,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:11:30,121 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:30,122 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-08-22 22:11:30,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:30,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453745244] [2020-08-22 22:11:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-22 22:11:30,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453745244] [2020-08-22 22:11:30,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:30,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:11:30,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236136523] [2020-08-22 22:11:30,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:11:30,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:30,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:11:30,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:11:30,337 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2020-08-22 22:11:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:30,446 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-08-22 22:11:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:11:30,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-22 22:11:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:30,448 INFO L225 Difference]: With dead ends: 41 [2020-08-22 22:11:30,448 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 22:11:30,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:11:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 22:11:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-22 22:11:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 22:11:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-08-22 22:11:30,461 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-08-22 22:11:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:30,462 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-08-22 22:11:30,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:11:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-08-22 22:11:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 22:11:30,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:30,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:30,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:11:30,465 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-08-22 22:11:30,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:30,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541683183] [2020-08-22 22:11:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-22 22:11:30,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541683183] [2020-08-22 22:11:30,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:30,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:11:30,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648594752] [2020-08-22 22:11:30,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:11:30,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:30,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:11:30,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:11:30,657 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2020-08-22 22:11:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:30,743 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-08-22 22:11:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 22:11:30,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-22 22:11:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:30,745 INFO L225 Difference]: With dead ends: 46 [2020-08-22 22:11:30,746 INFO L226 Difference]: Without dead ends: 40 [2020-08-22 22:11:30,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:11:30,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-22 22:11:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-22 22:11:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 22:11:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-08-22 22:11:30,757 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-08-22 22:11:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:30,758 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-08-22 22:11:30,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:11:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-08-22 22:11:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 22:11:30,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:30,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:30,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:11:30,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-08-22 22:11:30,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:30,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770859321] [2020-08-22 22:11:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-08-22 22:11:30,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770859321] [2020-08-22 22:11:30,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:30,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:11:30,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450591626] [2020-08-22 22:11:30,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:11:30,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:30,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:11:30,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:11:30,941 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-08-22 22:11:31,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:31,031 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-08-22 22:11:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:11:31,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-08-22 22:11:31,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:31,034 INFO L225 Difference]: With dead ends: 51 [2020-08-22 22:11:31,034 INFO L226 Difference]: Without dead ends: 45 [2020-08-22 22:11:31,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:11:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-22 22:11:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-22 22:11:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 22:11:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-08-22 22:11:31,046 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-08-22 22:11:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:31,047 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-08-22 22:11:31,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:11:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-08-22 22:11:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 22:11:31,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:31,049 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:31,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:11:31,050 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:31,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:31,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-08-22 22:11:31,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:31,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833077287] [2020-08-22 22:11:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 22:11:31,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833077287] [2020-08-22 22:11:31,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:31,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:11:31,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495141654] [2020-08-22 22:11:31,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:11:31,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:31,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:11:31,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:11:31,266 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2020-08-22 22:11:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:31,389 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-08-22 22:11:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:11:31,389 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-08-22 22:11:31,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:31,391 INFO L225 Difference]: With dead ends: 56 [2020-08-22 22:11:31,391 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 22:11:31,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:11:31,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 22:11:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-08-22 22:11:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 22:11:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-08-22 22:11:31,404 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-08-22 22:11:31,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:31,405 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-08-22 22:11:31,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:11:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-08-22 22:11:31,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 22:11:31,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:31,408 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:31,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:11:31,409 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:31,409 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-08-22 22:11:31,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:31,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15230759] [2020-08-22 22:11:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-08-22 22:11:31,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15230759] [2020-08-22 22:11:31,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:31,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:11:31,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774724175] [2020-08-22 22:11:31,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:11:31,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:31,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:11:31,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:11:31,700 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 11 states. [2020-08-22 22:11:31,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:31,842 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-08-22 22:11:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:11:31,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-08-22 22:11:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:31,845 INFO L225 Difference]: With dead ends: 61 [2020-08-22 22:11:31,847 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 22:11:31,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:11:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 22:11:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-22 22:11:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 22:11:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-08-22 22:11:31,865 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-08-22 22:11:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:31,866 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-08-22 22:11:31,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:11:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-08-22 22:11:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-08-22 22:11:31,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:31,870 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:31,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:11:31,871 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:31,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:31,871 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-08-22 22:11:31,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:31,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926421470] [2020-08-22 22:11:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:31,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-08-22 22:11:32,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926421470] [2020-08-22 22:11:32,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:32,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 22:11:32,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864661155] [2020-08-22 22:11:32,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 22:11:32,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:32,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 22:11:32,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:11:32,280 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 12 states. [2020-08-22 22:11:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:32,437 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-08-22 22:11:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:11:32,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-08-22 22:11:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:32,439 INFO L225 Difference]: With dead ends: 66 [2020-08-22 22:11:32,439 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 22:11:32,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:11:32,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 22:11:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-22 22:11:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 22:11:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-08-22 22:11:32,462 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-08-22 22:11:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:32,463 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-08-22 22:11:32,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 22:11:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-08-22 22:11:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 22:11:32,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:32,469 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:32,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:11:32,470 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-08-22 22:11:32,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:32,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357291668] [2020-08-22 22:11:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-08-22 22:11:32,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357291668] [2020-08-22 22:11:32,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:32,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 22:11:32,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980983158] [2020-08-22 22:11:32,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 22:11:32,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:32,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 22:11:32,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:11:32,870 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 13 states. [2020-08-22 22:11:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:33,021 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-08-22 22:11:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 22:11:33,021 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2020-08-22 22:11:33,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:33,023 INFO L225 Difference]: With dead ends: 71 [2020-08-22 22:11:33,023 INFO L226 Difference]: Without dead ends: 65 [2020-08-22 22:11:33,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-22 22:11:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-22 22:11:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-08-22 22:11:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-08-22 22:11:33,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-08-22 22:11:33,044 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-08-22 22:11:33,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:33,044 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-08-22 22:11:33,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 22:11:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-08-22 22:11:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 22:11:33,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:33,047 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:33,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:11:33,047 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:33,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:33,047 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-08-22 22:11:33,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:33,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611842655] [2020-08-22 22:11:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-22 22:11:33,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611842655] [2020-08-22 22:11:33,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:33,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 22:11:33,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564082599] [2020-08-22 22:11:33,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:11:33,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:33,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:11:33,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:11:33,445 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 14 states. [2020-08-22 22:11:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:33,602 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-08-22 22:11:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:11:33,603 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-22 22:11:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:33,604 INFO L225 Difference]: With dead ends: 76 [2020-08-22 22:11:33,604 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 22:11:33,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:11:33,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 22:11:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-08-22 22:11:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-22 22:11:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-08-22 22:11:33,615 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-08-22 22:11:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:33,615 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-08-22 22:11:33,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:11:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-08-22 22:11:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 22:11:33,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:33,617 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:33,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:11:33,618 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:33,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:33,618 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-08-22 22:11:33,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:33,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767234818] [2020-08-22 22:11:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-22 22:11:33,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767234818] [2020-08-22 22:11:33,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:33,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 22:11:33,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642507719] [2020-08-22 22:11:33,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 22:11:33,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:33,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 22:11:33,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:11:33,998 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 15 states. [2020-08-22 22:11:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:34,150 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-08-22 22:11:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:11:34,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 108 [2020-08-22 22:11:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:34,151 INFO L225 Difference]: With dead ends: 81 [2020-08-22 22:11:34,152 INFO L226 Difference]: Without dead ends: 75 [2020-08-22 22:11:34,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-08-22 22:11:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-22 22:11:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-08-22 22:11:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 22:11:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-08-22 22:11:34,163 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-08-22 22:11:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:34,163 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-08-22 22:11:34,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 22:11:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-08-22 22:11:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-22 22:11:34,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:34,165 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:34,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:11:34,165 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:34,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:34,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-08-22 22:11:34,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:34,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634102278] [2020-08-22 22:11:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-08-22 22:11:34,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634102278] [2020-08-22 22:11:34,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:34,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 22:11:34,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085429303] [2020-08-22 22:11:34,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 22:11:34,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:34,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 22:11:34,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:11:34,653 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 16 states. [2020-08-22 22:11:34,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:34,867 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-08-22 22:11:34,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 22:11:34,867 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 117 [2020-08-22 22:11:34,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:34,869 INFO L225 Difference]: With dead ends: 86 [2020-08-22 22:11:34,869 INFO L226 Difference]: Without dead ends: 80 [2020-08-22 22:11:34,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-08-22 22:11:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-08-22 22:11:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-08-22 22:11:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-22 22:11:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-08-22 22:11:34,881 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 117 [2020-08-22 22:11:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:34,881 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-08-22 22:11:34,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 22:11:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-08-22 22:11:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-22 22:11:34,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:34,884 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:34,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:11:34,885 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:34,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:34,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1141580405, now seen corresponding path program 12 times [2020-08-22 22:11:34,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:34,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741331060] [2020-08-22 22:11:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:34,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-08-22 22:11:35,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741331060] [2020-08-22 22:11:35,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:35,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 22:11:35,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2267428] [2020-08-22 22:11:35,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 22:11:35,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:35,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 22:11:35,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:11:35,538 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 17 states. [2020-08-22 22:11:35,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:35,744 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-08-22 22:11:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 22:11:35,744 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 126 [2020-08-22 22:11:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:35,746 INFO L225 Difference]: With dead ends: 91 [2020-08-22 22:11:35,746 INFO L226 Difference]: Without dead ends: 85 [2020-08-22 22:11:35,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-08-22 22:11:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-08-22 22:11:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-08-22 22:11:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 22:11:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-08-22 22:11:35,760 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 126 [2020-08-22 22:11:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:35,760 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-08-22 22:11:35,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 22:11:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-08-22 22:11:35,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-08-22 22:11:35,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:35,762 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:35,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:11:35,762 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:35,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:35,763 INFO L82 PathProgramCache]: Analyzing trace with hash 55997035, now seen corresponding path program 13 times [2020-08-22 22:11:35,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:35,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414288444] [2020-08-22 22:11:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-08-22 22:11:36,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414288444] [2020-08-22 22:11:36,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:36,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 22:11:36,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265188946] [2020-08-22 22:11:36,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 22:11:36,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:36,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 22:11:36,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:11:36,375 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 18 states. [2020-08-22 22:11:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:36,585 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2020-08-22 22:11:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 22:11:36,586 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 135 [2020-08-22 22:11:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:36,587 INFO L225 Difference]: With dead ends: 96 [2020-08-22 22:11:36,587 INFO L226 Difference]: Without dead ends: 90 [2020-08-22 22:11:36,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-08-22 22:11:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-22 22:11:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-22 22:11:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-22 22:11:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-08-22 22:11:36,594 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 135 [2020-08-22 22:11:36,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:36,595 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-08-22 22:11:36,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 22:11:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-08-22 22:11:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-22 22:11:36,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:36,597 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:36,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 22:11:36,597 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:36,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:36,597 INFO L82 PathProgramCache]: Analyzing trace with hash 394086239, now seen corresponding path program 14 times [2020-08-22 22:11:36,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:36,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625664393] [2020-08-22 22:11:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-08-22 22:11:37,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625664393] [2020-08-22 22:11:37,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:37,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 22:11:37,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254627866] [2020-08-22 22:11:37,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 22:11:37,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 22:11:37,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-22 22:11:37,272 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 19 states. [2020-08-22 22:11:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:37,523 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-08-22 22:11:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 22:11:37,523 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 144 [2020-08-22 22:11:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:37,525 INFO L225 Difference]: With dead ends: 101 [2020-08-22 22:11:37,525 INFO L226 Difference]: Without dead ends: 95 [2020-08-22 22:11:37,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 22:11:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-22 22:11:37,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-08-22 22:11:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-22 22:11:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-08-22 22:11:37,537 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 144 [2020-08-22 22:11:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:37,540 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-08-22 22:11:37,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 22:11:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-08-22 22:11:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 22:11:37,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:37,542 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:37,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 22:11:37,543 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:37,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1047772929, now seen corresponding path program 15 times [2020-08-22 22:11:37,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:37,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836291557] [2020-08-22 22:11:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:11:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2020-08-22 22:11:38,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836291557] [2020-08-22 22:11:38,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:11:38,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 22:11:38,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378972066] [2020-08-22 22:11:38,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:11:38,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:38,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:11:38,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:11:38,491 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 9 states. [2020-08-22 22:11:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:38,623 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2020-08-22 22:11:38,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:11:38,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 153 [2020-08-22 22:11:38,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:38,625 INFO L225 Difference]: With dead ends: 95 [2020-08-22 22:11:38,625 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:11:38,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:11:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:11:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:11:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:11:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:11:38,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2020-08-22 22:11:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:38,627 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:11:38,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:11:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:11:38,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:11:38,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 22:11:38,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:11:39,086 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:11:39,086 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:11:39,087 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:11:39,087 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 22:11:39,087 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 22:11:39,087 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:11:39,087 INFO L264 CegarLoopResult]: At program point sumEXIT(lines 3 9) the Hoare annotation is: (let ((.cse0 (+ |sum_#in~n| |sum_#in~m|))) (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= .cse0 |sum_#res|) (<= |sum_#res| .cse0))) [2020-08-22 22:11:39,087 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2020-08-22 22:11:39,088 INFO L264 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (let ((.cse0 (+ |sum_#in~n| |sum_#in~m|))) (and (= sum_~n |sum_#in~n|) (<= .cse0 |sum_#t~ret0|) (<= |sum_#t~ret0| .cse0) (= sum_~m |sum_#in~m|))) [2020-08-22 22:11:39,088 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (<= |sum_#in~n| 0) (= sum_~m |sum_#in~m|)) [2020-08-22 22:11:39,088 INFO L264 CegarLoopResult]: At program point L7-2(line 7) the Hoare annotation is: (let ((.cse0 (+ |sum_#in~n| |sum_#in~m|))) (and (= sum_~n |sum_#in~n|) (<= .cse0 |sum_#t~ret0|) (<= |sum_#t~ret0| .cse0) (= sum_~m |sum_#in~m|))) [2020-08-22 22:11:39,088 INFO L264 CegarLoopResult]: At program point L4(lines 4 8) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2020-08-22 22:11:39,088 INFO L264 CegarLoopResult]: At program point L7-3(line 7) the Hoare annotation is: (let ((.cse0 (+ |sum_#in~n| |sum_#in~m|))) (and (= sum_~n |sum_#in~n|) (<= .cse0 |sum_#t~ret0|) (<= |sum_#t~ret0| .cse0) (= sum_~m |sum_#in~m|) (<= .cse0 |sum_#res|) (<= |sum_#res| .cse0))) [2020-08-22 22:11:39,089 INFO L264 CegarLoopResult]: At program point L3(lines 3 9) the Hoare annotation is: (= sum_~n |sum_#in~n|) [2020-08-22 22:11:39,089 INFO L264 CegarLoopResult]: At program point sumFINAL(lines 3 9) the Hoare annotation is: (let ((.cse0 (+ |sum_#in~n| |sum_#in~m|))) (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= .cse0 |sum_#res|) (<= |sum_#res| .cse0))) [2020-08-22 22:11:39,089 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2020-08-22 22:11:39,089 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: false [2020-08-22 22:11:39,090 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-08-22 22:11:39,090 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 11 18) the Hoare annotation is: (<= 15 main_~a~0) [2020-08-22 22:11:39,090 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: false [2020-08-22 22:11:39,090 INFO L264 CegarLoopResult]: At program point L15(lines 15 17) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 main_~result~0) (<= 15 main_~a~0) (<= main_~result~0 .cse0) (<= main_~a~0 15))) [2020-08-22 22:11:39,090 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (<= 15 main_~a~0) (<= main_~a~0 15)) [2020-08-22 22:11:39,090 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= 15 main_~a~0) (<= main_~a~0 15)) [2020-08-22 22:11:39,091 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= |main_#t~ret1| .cse0) (<= 15 main_~a~0) (<= .cse0 |main_#t~ret1|) (<= main_~a~0 15))) [2020-08-22 22:11:39,091 INFO L264 CegarLoopResult]: At program point L15-2(lines 11 18) the Hoare annotation is: (<= 15 main_~a~0) [2020-08-22 22:11:39,091 INFO L264 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= |main_#t~ret1| .cse0) (<= 15 main_~a~0) (<= .cse0 |main_#t~ret1|) (<= main_~a~0 15))) [2020-08-22 22:11:39,091 INFO L264 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 main_~result~0) (<= |main_#t~ret1| .cse0) (<= 15 main_~a~0) (<= .cse0 |main_#t~ret1|) (<= main_~result~0 .cse0) (<= main_~a~0 15))) [2020-08-22 22:11:39,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:11:39 BoogieIcfgContainer [2020-08-22 22:11:39,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:11:39,113 INFO L168 Benchmark]: Toolchain (without parser) took 10460.20 ms. Allocated memory was 139.5 MB in the beginning and 448.8 MB in the end (delta: 309.3 MB). Free memory was 103.5 MB in the beginning and 113.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 299.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:39,113 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 22:11:39,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.79 ms. Allocated memory is still 139.5 MB. Free memory was 103.1 MB in the beginning and 94.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:39,115 INFO L168 Benchmark]: Boogie Preprocessor took 23.92 ms. Allocated memory is still 139.5 MB. Free memory was 94.1 MB in the beginning and 92.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:39,116 INFO L168 Benchmark]: RCFGBuilder took 336.24 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 170.2 MB in the end (delta: -77.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:39,116 INFO L168 Benchmark]: TraceAbstraction took 9845.12 ms. Allocated memory was 202.9 MB in the beginning and 448.8 MB in the end (delta: 245.9 MB). Free memory was 170.2 MB in the beginning and 113.3 MB in the end (delta: 56.9 MB). Peak memory consumption was 302.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:39,120 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.79 ms. Allocated memory is still 139.5 MB. Free memory was 103.1 MB in the beginning and 94.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.92 ms. Allocated memory is still 139.5 MB. Free memory was 94.1 MB in the beginning and 92.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.24 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 170.2 MB in the end (delta: -77.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9845.12 ms. Allocated memory was 202.9 MB in the beginning and 448.8 MB in the end (delta: 245.9 MB). Free memory was 170.2 MB in the beginning and 113.3 MB in the end (delta: 56.9 MB). Peak memory consumption was 302.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 3]: Procedure Contract for sum Derived contract for procedure sum: ((n == \old(n) && m == \old(m)) && \old(n) + \old(m) <= \result) && \result <= \old(n) + \old(m) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 15 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 16, TraceHistogramMax: 16, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 286 SDtfs, 650 SDslu, 1237 SDs, 0 SdLazy, 623 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 647 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=15, 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, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 37 PreInvPairs, 262 NumberOfFragments, 230 HoareAnnotationTreeSize, 37 FomulaSimplifications, 3176 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 27 FomulaSimplificationsInter, 604 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1368 NumberOfCodeBlocks, 1368 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1352 ConstructedInterpolants, 0 QuantifiedInterpolants, 491080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 3155/5640 InterpolantCoveringCapability, 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...