/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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/loop-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:28:27,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:28:27,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:28:27,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:28:27,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:28:27,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:28:27,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:28:27,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:28:27,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:28:27,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:28:27,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:28:27,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:28:27,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:28:27,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:28:27,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:28:27,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:28:28,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:28:28,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:28:28,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:28:28,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:28:28,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:28:28,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:28:28,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:28:28,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:28:28,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:28:28,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:28:28,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:28:28,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:28:28,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:28:28,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:28:28,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:28:28,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:28:28,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:28:28,043 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:28:28,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:28:28,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:28:28,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:28:28,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:28:28,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:28:28,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:28:28,044 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:28:28,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:28:28,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:28:28,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:28:28,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:28:28,431 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:28:28,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2020-10-24 02:28:28,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd1c09329/8961db6a20c2438aa65231fbd59a30c5/FLAGa061f19c3 [2020-10-24 02:28:29,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:28:29,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2020-10-24 02:28:29,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd1c09329/8961db6a20c2438aa65231fbd59a30c5/FLAGa061f19c3 [2020-10-24 02:28:29,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd1c09329/8961db6a20c2438aa65231fbd59a30c5 [2020-10-24 02:28:29,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:28:29,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:28:29,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:28:29,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:28:29,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:28:29,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9f3ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29, skipping insertion in model container [2020-10-24 02:28:29,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:28:29,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:28:29,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:28:29,686 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:28:29,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:28:29,719 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:28:29,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29 WrapperNode [2020-10-24 02:28:29,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:28:29,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:28:29,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:28:29,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:28:29,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (1/1) ... [2020-10-24 02:28:29,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:28:29,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:28:29,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:28:29,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:28:29,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (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 [2020-10-24 02:28:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:28:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:28:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:28:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:28:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:28:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:28:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:28:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:28:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:28:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:28:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:28:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:28:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:28:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:28:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:28:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:28:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:28:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:28:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:28:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:28:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:28:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:28:30,325 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:28:30,325 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-24 02:28:30,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:28:30 BoogieIcfgContainer [2020-10-24 02:28:30,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:28:30,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:28:30,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:28:30,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:28:30,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:28:29" (1/3) ... [2020-10-24 02:28:30,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176c516e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:28:30, skipping insertion in model container [2020-10-24 02:28:30,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:29" (2/3) ... [2020-10-24 02:28:30,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176c516e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:28:30, skipping insertion in model container [2020-10-24 02:28:30,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:28:30" (3/3) ... [2020-10-24 02:28:30,367 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-10-24 02:28:30,380 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:28:30,386 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:28:30,411 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:28:30,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:28:30,453 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:28:30,453 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:28:30,453 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:28:30,453 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:28:30,453 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:28:30,453 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:28:30,453 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:28:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-24 02:28:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-24 02:28:30,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:30,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:30,490 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:30,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:30,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1115921713, now seen corresponding path program 1 times [2020-10-24 02:28:30,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:30,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079295283] [2020-10-24 02:28:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:28:30,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079295283] [2020-10-24 02:28:30,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:28:30,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:28:30,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042691218] [2020-10-24 02:28:30,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:28:30,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:28:30,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:28:30,950 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 6 states. [2020-10-24 02:28:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:31,305 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-10-24 02:28:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:28:31,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-24 02:28:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:31,316 INFO L225 Difference]: With dead ends: 75 [2020-10-24 02:28:31,316 INFO L226 Difference]: Without dead ends: 42 [2020-10-24 02:28:31,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:28:31,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-24 02:28:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-24 02:28:31,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-24 02:28:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-24 02:28:31,377 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 28 [2020-10-24 02:28:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:31,378 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-24 02:28:31,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:28:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-24 02:28:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-24 02:28:31,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:31,380 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:31,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:28:31,381 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1724895446, now seen corresponding path program 1 times [2020-10-24 02:28:31,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:31,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383491752] [2020-10-24 02:28:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:28:31,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383491752] [2020-10-24 02:28:31,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:28:31,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:28:31,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880451300] [2020-10-24 02:28:31,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:28:31,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:31,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:28:31,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:28:31,531 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 6 states. [2020-10-24 02:28:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:31,843 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2020-10-24 02:28:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:28:31,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-24 02:28:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:31,847 INFO L225 Difference]: With dead ends: 60 [2020-10-24 02:28:31,847 INFO L226 Difference]: Without dead ends: 56 [2020-10-24 02:28:31,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:28:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-24 02:28:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-24 02:28:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-24 02:28:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-24 02:28:31,871 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 33 [2020-10-24 02:28:31,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:31,872 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-24 02:28:31,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:28:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-24 02:28:31,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-24 02:28:31,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:31,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:31,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:28:31,875 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:31,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:31,876 INFO L82 PathProgramCache]: Analyzing trace with hash -311170620, now seen corresponding path program 1 times [2020-10-24 02:28:31,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:31,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276199270] [2020-10-24 02:28:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:28:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:28:31,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276199270] [2020-10-24 02:28:31,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:28:31,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 02:28:31,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843332376] [2020-10-24 02:28:31,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 02:28:31,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 02:28:31,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 02:28:31,955 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 4 states. [2020-10-24 02:28:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:32,082 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-24 02:28:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 02:28:32,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-24 02:28:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:32,085 INFO L225 Difference]: With dead ends: 87 [2020-10-24 02:28:32,085 INFO L226 Difference]: Without dead ends: 64 [2020-10-24 02:28:32,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:28:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-24 02:28:32,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-24 02:28:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-24 02:28:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-24 02:28:32,104 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 39 [2020-10-24 02:28:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:32,104 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-24 02:28:32,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 02:28:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-24 02:28:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-24 02:28:32,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:32,107 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:32,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:28:32,107 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash 2071585797, now seen corresponding path program 1 times [2020-10-24 02:28:32,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:32,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023711191] [2020-10-24 02:28:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-24 02:28:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-24 02:28:32,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023711191] [2020-10-24 02:28:32,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:32,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-24 02:28:32,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326740826] [2020-10-24 02:28:32,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:28:32,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:32,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:28:32,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:28:32,215 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 6 states. [2020-10-24 02:28:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:32,477 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-10-24 02:28:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:28:32,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-24 02:28:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:32,480 INFO L225 Difference]: With dead ends: 100 [2020-10-24 02:28:32,480 INFO L226 Difference]: Without dead ends: 76 [2020-10-24 02:28:32,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:28:32,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-24 02:28:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-10-24 02:28:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-24 02:28:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-10-24 02:28:32,502 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 53 [2020-10-24 02:28:32,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:32,503 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-10-24 02:28:32,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:28:32,503 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-10-24 02:28:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-24 02:28:32,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:32,506 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:32,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:28:32,506 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:32,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1288152954, now seen corresponding path program 2 times [2020-10-24 02:28:32,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:32,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223789578] [2020-10-24 02:28:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 02:28:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:28:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:28:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-24 02:28:32,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223789578] [2020-10-24 02:28:32,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:32,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 02:28:32,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768931670] [2020-10-24 02:28:32,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:28:32,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:32,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:28:32,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:28:32,735 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 8 states. [2020-10-24 02:28:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:33,125 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2020-10-24 02:28:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:28:33,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-24 02:28:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:33,128 INFO L225 Difference]: With dead ends: 96 [2020-10-24 02:28:33,128 INFO L226 Difference]: Without dead ends: 92 [2020-10-24 02:28:33,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:28:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-24 02:28:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-24 02:28:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-24 02:28:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2020-10-24 02:28:33,158 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 67 [2020-10-24 02:28:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:33,159 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2020-10-24 02:28:33,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:28:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2020-10-24 02:28:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-24 02:28:33,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:33,161 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:33,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:28:33,162 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:33,163 INFO L82 PathProgramCache]: Analyzing trace with hash -406653898, now seen corresponding path program 3 times [2020-10-24 02:28:33,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:33,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040838268] [2020-10-24 02:28:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 02:28:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:28:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:28:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-24 02:28:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-24 02:28:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-24 02:28:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-24 02:28:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-24 02:28:33,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040838268] [2020-10-24 02:28:33,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:33,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 02:28:33,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282425848] [2020-10-24 02:28:33,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:28:33,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:33,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:28:33,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:28:33,316 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 8 states. [2020-10-24 02:28:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:33,761 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2020-10-24 02:28:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:28:33,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-24 02:28:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:33,773 INFO L225 Difference]: With dead ends: 172 [2020-10-24 02:28:33,773 INFO L226 Difference]: Without dead ends: 120 [2020-10-24 02:28:33,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:28:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-24 02:28:33,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-10-24 02:28:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-24 02:28:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-10-24 02:28:33,807 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 101 [2020-10-24 02:28:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:33,807 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-10-24 02:28:33,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:28:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-10-24 02:28:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-24 02:28:33,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:33,810 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 7, 7, 7, 7, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:33,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 02:28:33,811 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:33,811 INFO L82 PathProgramCache]: Analyzing trace with hash 937547704, now seen corresponding path program 4 times [2020-10-24 02:28:33,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:33,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079684556] [2020-10-24 02:28:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 02:28:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:28:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:28:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:28:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-24 02:28:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-24 02:28:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 02:28:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-24 02:28:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:28:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-24 02:28:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:28:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 101 proven. 21 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2020-10-24 02:28:34,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079684556] [2020-10-24 02:28:34,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:34,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:28:34,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362028587] [2020-10-24 02:28:34,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:28:34,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:34,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:28:34,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:28:34,021 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 10 states. [2020-10-24 02:28:34,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:34,588 INFO L93 Difference]: Finished difference Result 202 states and 245 transitions. [2020-10-24 02:28:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:28:34,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-10-24 02:28:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:34,593 INFO L225 Difference]: With dead ends: 202 [2020-10-24 02:28:34,593 INFO L226 Difference]: Without dead ends: 138 [2020-10-24 02:28:34,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:28:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-24 02:28:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 126. [2020-10-24 02:28:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-24 02:28:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 149 transitions. [2020-10-24 02:28:34,653 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 149 transitions. Word has length 129 [2020-10-24 02:28:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:34,653 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 149 transitions. [2020-10-24 02:28:34,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:28:34,653 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 149 transitions. [2020-10-24 02:28:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-24 02:28:34,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:34,660 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:34,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 02:28:34,660 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:34,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1632285754, now seen corresponding path program 5 times [2020-10-24 02:28:34,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:34,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468525576] [2020-10-24 02:28:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 02:28:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:28:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:28:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:28:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-24 02:28:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:28:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 02:28:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-24 02:28:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:28:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-24 02:28:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-24 02:28:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-24 02:28:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:28:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:28:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-24 02:28:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 156 proven. 40 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2020-10-24 02:28:35,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468525576] [2020-10-24 02:28:35,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:35,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:28:35,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577145874] [2020-10-24 02:28:35,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:28:35,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:35,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:28:35,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:28:35,004 INFO L87 Difference]: Start difference. First operand 126 states and 149 transitions. Second operand 12 states. [2020-10-24 02:28:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:35,837 INFO L93 Difference]: Finished difference Result 232 states and 285 transitions. [2020-10-24 02:28:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:28:35,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2020-10-24 02:28:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:35,840 INFO L225 Difference]: With dead ends: 232 [2020-10-24 02:28:35,840 INFO L226 Difference]: Without dead ends: 156 [2020-10-24 02:28:35,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:28:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-24 02:28:35,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 144. [2020-10-24 02:28:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-24 02:28:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 173 transitions. [2020-10-24 02:28:35,874 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 173 transitions. Word has length 157 [2020-10-24 02:28:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:35,875 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 173 transitions. [2020-10-24 02:28:35,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:28:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 173 transitions. [2020-10-24 02:28:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-24 02:28:35,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:35,877 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 11, 11, 11, 11, 10, 10, 10, 10, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:35,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 02:28:35,878 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:35,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:35,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1967519300, now seen corresponding path program 6 times [2020-10-24 02:28:35,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:35,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065562885] [2020-10-24 02:28:35,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 02:28:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:28:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:28:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:28:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-24 02:28:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:28:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-24 02:28:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-24 02:28:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:28:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-24 02:28:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-24 02:28:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-24 02:28:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:28:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:28:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:28:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:28:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:28:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:28:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-24 02:28:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 223 proven. 65 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2020-10-24 02:28:36,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065562885] [2020-10-24 02:28:36,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:36,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:28:36,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801922048] [2020-10-24 02:28:36,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:28:36,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:36,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:28:36,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:28:36,150 INFO L87 Difference]: Start difference. First operand 144 states and 173 transitions. Second operand 14 states. [2020-10-24 02:28:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:37,151 INFO L93 Difference]: Finished difference Result 262 states and 325 transitions. [2020-10-24 02:28:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:28:37,152 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 185 [2020-10-24 02:28:37,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:37,154 INFO L225 Difference]: With dead ends: 262 [2020-10-24 02:28:37,154 INFO L226 Difference]: Without dead ends: 174 [2020-10-24 02:28:37,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=591, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:28:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-24 02:28:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 162. [2020-10-24 02:28:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-24 02:28:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 197 transitions. [2020-10-24 02:28:37,190 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 197 transitions. Word has length 185 [2020-10-24 02:28:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:37,190 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 197 transitions. [2020-10-24 02:28:37,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:28:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 197 transitions. [2020-10-24 02:28:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-24 02:28:37,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:37,194 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 13, 13, 13, 13, 12, 12, 12, 12, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:37,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 02:28:37,194 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 841766974, now seen corresponding path program 7 times [2020-10-24 02:28:37,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:37,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570199895] [2020-10-24 02:28:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 02:28:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:28:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:28:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:28:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-24 02:28:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:28:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-24 02:28:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-24 02:28:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:28:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:28:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-24 02:28:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-24 02:28:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:28:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:28:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:28:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:28:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:28:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:28:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-24 02:28:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:28:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-24 02:28:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:28:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-24 02:28:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 302 proven. 96 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2020-10-24 02:28:37,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570199895] [2020-10-24 02:28:37,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:37,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:28:37,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125641149] [2020-10-24 02:28:37,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:28:37,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:37,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:28:37,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:28:37,650 INFO L87 Difference]: Start difference. First operand 162 states and 197 transitions. Second operand 16 states. [2020-10-24 02:28:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:38,776 INFO L93 Difference]: Finished difference Result 292 states and 365 transitions. [2020-10-24 02:28:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 02:28:38,777 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 213 [2020-10-24 02:28:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:38,779 INFO L225 Difference]: With dead ends: 292 [2020-10-24 02:28:38,779 INFO L226 Difference]: Without dead ends: 192 [2020-10-24 02:28:38,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=375, Invalid=815, Unknown=0, NotChecked=0, Total=1190 [2020-10-24 02:28:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-24 02:28:38,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2020-10-24 02:28:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-24 02:28:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 221 transitions. [2020-10-24 02:28:38,831 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 221 transitions. Word has length 213 [2020-10-24 02:28:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:38,831 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 221 transitions. [2020-10-24 02:28:38,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:28:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 221 transitions. [2020-10-24 02:28:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-24 02:28:38,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:38,836 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 15, 15, 15, 15, 14, 14, 14, 14, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:38,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 02:28:38,836 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:38,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:38,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1931599936, now seen corresponding path program 8 times [2020-10-24 02:28:38,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:38,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823889003] [2020-10-24 02:28:38,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 02:28:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:28:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:28:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:28:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-24 02:28:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:28:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-24 02:28:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-24 02:28:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:28:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:28:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-24 02:28:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-24 02:28:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:28:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:28:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:28:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:28:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:28:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:28:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-24 02:28:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:28:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-24 02:28:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:28:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-24 02:28:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:28:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-24 02:28:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:28:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:28:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2310 backedges. 393 proven. 133 refuted. 0 times theorem prover too weak. 1784 trivial. 0 not checked. [2020-10-24 02:28:39,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823889003] [2020-10-24 02:28:39,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:39,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-24 02:28:39,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982924236] [2020-10-24 02:28:39,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-24 02:28:39,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:39,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-24 02:28:39,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-24 02:28:39,317 INFO L87 Difference]: Start difference. First operand 180 states and 221 transitions. Second operand 18 states. [2020-10-24 02:28:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:40,653 INFO L93 Difference]: Finished difference Result 310 states and 387 transitions. [2020-10-24 02:28:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-24 02:28:40,653 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 241 [2020-10-24 02:28:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:40,658 INFO L225 Difference]: With dead ends: 310 [2020-10-24 02:28:40,659 INFO L226 Difference]: Without dead ends: 198 [2020-10-24 02:28:40,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=485, Invalid=1075, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 02:28:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-24 02:28:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-24 02:28:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-24 02:28:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2020-10-24 02:28:40,713 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 241 [2020-10-24 02:28:40,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:40,713 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2020-10-24 02:28:40,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-24 02:28:40,713 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2020-10-24 02:28:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-24 02:28:40,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:40,718 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 17, 17, 17, 17, 16, 16, 16, 16, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:28:40,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 02:28:40,719 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:40,719 INFO L82 PathProgramCache]: Analyzing trace with hash -414457790, now seen corresponding path program 9 times [2020-10-24 02:28:40,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:40,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811755132] [2020-10-24 02:28:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-24 02:28:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:28:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 02:28:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:28:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:28:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:28:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-24 02:28:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:28:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-24 02:28:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-24 02:28:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:28:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:28:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-24 02:28:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-24 02:28:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-24 02:28:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-24 02:28:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:28:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:28:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:28:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:28:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-24 02:28:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:28:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-24 02:28:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:28:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-24 02:28:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:28:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-24 02:28:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:28:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-24 02:28:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:28:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-24 02:28:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:28:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-24 02:28:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2990 backedges. 94 proven. 432 refuted. 0 times theorem prover too weak. 2464 trivial. 0 not checked. [2020-10-24 02:28:41,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811755132] [2020-10-24 02:28:41,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:41,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:28:41,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531707087] [2020-10-24 02:28:41,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:28:41,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:41,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:28:41,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:28:41,111 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand 10 states. [2020-10-24 02:28:41,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:41,792 INFO L93 Difference]: Finished difference Result 200 states and 247 transitions. [2020-10-24 02:28:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:28:41,793 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 269 [2020-10-24 02:28:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:41,795 INFO L225 Difference]: With dead ends: 200 [2020-10-24 02:28:41,795 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:28:41,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:28:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:28:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:28:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:28:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:28:41,798 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 269 [2020-10-24 02:28:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:41,798 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:28:41,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:28:41,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:28:41,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:28:41,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 02:28:41,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:28:42,358 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2020-10-24 02:28:42,697 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2020-10-24 02:28:42,970 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 106 [2020-10-24 02:28:43,315 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2020-10-24 02:28:43,918 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 16 [2020-10-24 02:28:44,230 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 16 [2020-10-24 02:28:44,667 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 16 [2020-10-24 02:28:45,048 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 16 [2020-10-24 02:28:45,103 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,103 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,104 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,104 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,104 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,104 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,105 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:28:45,105 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:28:45,105 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,105 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,105 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,106 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,106 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-24 02:28:45,106 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:28:45,106 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:28:45,106 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:28:45,106 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:28:45,107 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:28:45,107 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:28:45,107 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 02:28:45,107 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-24 02:28:45,107 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:28:45,107 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:28:45,107 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:28:45,107 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0)) (.cse1 (<= main_~j~0 7))) (or (and .cse0 .cse1 (<= 1 main_~i~0)) (and .cse0 .cse1 (= main_~i~0 0)))) [2020-10-24 02:28:45,108 INFO L270 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0)) (.cse1 (<= main_~j~0 7))) (or (and .cse0 .cse1 (<= 1 main_~i~0)) (and .cse0 .cse1 (= main_~i~0 0)))) [2020-10-24 02:28:45,108 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-24 02:28:45,108 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-10-24 02:28:45,108 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 34) the Hoare annotation is: true [2020-10-24 02:28:45,108 INFO L277 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-10-24 02:28:45,108 INFO L270 CegarLoopResult]: At program point L27-3(lines 27 32) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0))) (or (and .cse0 (<= 1 main_~i~0)) (and .cse0 (= main_~i~0 0)))) [2020-10-24 02:28:45,108 INFO L277 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: true [2020-10-24 02:28:45,109 INFO L270 CegarLoopResult]: At program point L27-4(line 27) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0))) (or (and .cse0 (= main_~i~0 0) (= |main_#t~post4| 0)) (and .cse0 (<= 1 main_~i~0) (<= 1 |main_#t~post4|)))) [2020-10-24 02:28:45,109 INFO L277 CegarLoopResult]: At program point L25-3(line 25) the Hoare annotation is: true [2020-10-24 02:28:45,109 INFO L270 CegarLoopResult]: At program point L27-5(line 27) the Hoare annotation is: (or (and (<= 2 main_~i~0) (<= 1 |main_#t~post4|)) (and (<= 1 main_~i~0) (= |main_#t~post4| 0))) [2020-10-24 02:28:45,109 INFO L270 CegarLoopResult]: At program point L27-6(lines 27 32) the Hoare annotation is: (or (= main_~i~0 0) (<= 1 main_~i~0)) [2020-10-24 02:28:45,109 INFO L277 CegarLoopResult]: At program point L27-7(lines 27 32) the Hoare annotation is: true [2020-10-24 02:28:45,109 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 24 34) the Hoare annotation is: true [2020-10-24 02:28:45,110 INFO L270 CegarLoopResult]: At program point L30(lines 28 31) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0)) (.cse1 (<= main_~j~0 7))) (or (and .cse0 .cse1 (<= 1 main_~i~0)) (and .cse0 .cse1 (= main_~i~0 0)))) [2020-10-24 02:28:45,110 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 34) the Hoare annotation is: true [2020-10-24 02:28:45,110 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0))) (or (and .cse0 (<= 1 main_~i~0)) (and .cse0 (= main_~i~0 0)))) [2020-10-24 02:28:45,110 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-24 02:28:45,110 INFO L277 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-10-24 02:28:45,110 INFO L270 CegarLoopResult]: At program point L28-3(line 28) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0)) (.cse1 (<= main_~j~0 7))) (or (and .cse0 .cse1 (<= 1 main_~i~0)) (and .cse0 .cse1 (= main_~i~0 0)))) [2020-10-24 02:28:45,110 INFO L270 CegarLoopResult]: At program point L28-4(line 28) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0))) (or (and .cse0 (<= 1 main_~i~0)) (and .cse0 (= main_~i~0 0)))) [2020-10-24 02:28:45,111 INFO L270 CegarLoopResult]: At program point L28-5(lines 28 31) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~nlen~0))) (or (and .cse0 (<= 1 main_~i~0)) (and .cse0 (= main_~i~0 0)))) [2020-10-24 02:28:45,111 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:28:45,111 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-24 02:28:45,111 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:28:45,111 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:28:45,111 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:28:45,112 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:28:45,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:28:45 BoogieIcfgContainer [2020-10-24 02:28:45,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:28:45,133 INFO L168 Benchmark]: Toolchain (without parser) took 15660.86 ms. Allocated memory was 158.3 MB in the beginning and 336.6 MB in the end (delta: 178.3 MB). Free memory was 134.2 MB in the beginning and 279.9 MB in the end (delta: -145.7 MB). Peak memory consumption was 200.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:45,134 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 158.3 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:28:45,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.62 ms. Allocated memory is still 158.3 MB. Free memory was 133.7 MB in the beginning and 124.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:45,135 INFO L168 Benchmark]: Boogie Preprocessor took 35.59 ms. Allocated memory is still 158.3 MB. Free memory was 124.2 MB in the beginning and 122.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:45,136 INFO L168 Benchmark]: RCFGBuilder took 571.51 ms. Allocated memory is still 158.3 MB. Free memory was 122.8 MB in the beginning and 107.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:45,137 INFO L168 Benchmark]: TraceAbstraction took 14798.36 ms. Allocated memory was 158.3 MB in the beginning and 336.6 MB in the end (delta: 178.3 MB). Free memory was 106.8 MB in the beginning and 279.9 MB in the end (delta: -173.1 MB). Peak memory consumption was 173.3 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:45,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 158.3 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.62 ms. Allocated memory is still 158.3 MB. Free memory was 133.7 MB in the beginning and 124.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.59 ms. Allocated memory is still 158.3 MB. Free memory was 124.2 MB in the beginning and 122.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 571.51 ms. Allocated memory is still 158.3 MB. Free memory was 122.8 MB in the beginning and 107.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14798.36 ms. Allocated memory was 158.3 MB in the beginning and 336.6 MB in the end (delta: 178.3 MB). Free memory was 106.8 MB in the beginning and 279.9 MB in the end (delta: -173.1 MB). Peak memory consumption was 173.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (i + 1 <= nlen && 1 <= i) || (i + 1 <= nlen && i == 0) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: i == 0 || 1 <= i - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.3s, OverallIterations: 12, TraceHistogramMax: 34, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 452 SDtfs, 572 SDslu, 729 SDs, 0 SdLazy, 1955 SolverSat, 387 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 80 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 47 LocationsWithAnnotation, 1079 PreInvPairs, 1341 NumberOfFragments, 308 HoareAnnotationTreeSize, 1079 FomulaSimplifications, 262700 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 47 FomulaSimplificationsInter, 18952 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1515 NumberOfCodeBlocks, 1515 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1503 ConstructedInterpolants, 0 QuantifiedInterpolants, 436003 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 9024/9829 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...