/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:33:39,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:33:39,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:33:39,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:33:39,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:33:39,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:33:39,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:33:39,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:33:39,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:33:39,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:33:39,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:33:39,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:33:39,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:33:39,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:33:39,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:33:39,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:33:39,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:33:39,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:33:39,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:33:39,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:33:39,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:33:39,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:33:39,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:33:39,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:33:39,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:33:39,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:33:39,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:33:39,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:33:39,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:33:39,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:33:39,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:33:39,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:33:39,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:33:39,985 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:33:39,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:33:39,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:33:39,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:33:39,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:33:39,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:33:39,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:33:39,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:33:39,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:33:39,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:33:39,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:33:39,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:33:39,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:33:39,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:33:39,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:33:39,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:33:39,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:33:39,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:39,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:33:39,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:33:39,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:33:39,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:33:39,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:33:39,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:33:39,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:33:39,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:33:40,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:33:40,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:33:40,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:33:40,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:33:40,279 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:33:40,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-07-07 11:33:40,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286617ba6/da4f14ce05644ca9ac718f7a2f80fceb/FLAGb68ee5558 [2020-07-07 11:33:40,859 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:33:40,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2020-07-07 11:33:40,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286617ba6/da4f14ce05644ca9ac718f7a2f80fceb/FLAGb68ee5558 [2020-07-07 11:33:41,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286617ba6/da4f14ce05644ca9ac718f7a2f80fceb [2020-07-07 11:33:41,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:33:41,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:33:41,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:41,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:33:41,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:33:41,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229e7fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41, skipping insertion in model container [2020-07-07 11:33:41,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:33:41,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:33:41,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:41,485 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:33:41,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:41,520 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:33:41,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41 WrapperNode [2020-07-07 11:33:41,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:41,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:33:41,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:33:41,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:33:41,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (1/1) ... [2020-07-07 11:33:41,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:33:41,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:33:41,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:33:41,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:33:41,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (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 [2020-07-07 11:33:41,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:33:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:33:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:33:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:33:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:33:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:33:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:33:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:33:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:33:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:33:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:33:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:33:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:33:42,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:33:42,026 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 11:33:42,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:42 BoogieIcfgContainer [2020-07-07 11:33:42,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:33:42,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:33:42,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:33:42,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:33:42,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:33:41" (1/3) ... [2020-07-07 11:33:42,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca9bd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:42, skipping insertion in model container [2020-07-07 11:33:42,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:41" (2/3) ... [2020-07-07 11:33:42,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca9bd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:42, skipping insertion in model container [2020-07-07 11:33:42,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:42" (3/3) ... [2020-07-07 11:33:42,040 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-07-07 11:33:42,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:33:42,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:33:42,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:33:42,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:33:42,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:33:42,089 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:33:42,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:33:42,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:33:42,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:33:42,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:33:42,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:33:42,107 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-07 11:33:42,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:33:42,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:42,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:42,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:42,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:42,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1992019723, now seen corresponding path program 1 times [2020-07-07 11:33:42,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:42,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062432894] [2020-07-07 11:33:42,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:42,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062432894] [2020-07-07 11:33:42,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:42,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:33:42,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53018616] [2020-07-07 11:33:42,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:42,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:42,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:42,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:42,342 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-07-07 11:33:42,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:42,449 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2020-07-07 11:33:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:33:42,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-07 11:33:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:42,459 INFO L225 Difference]: With dead ends: 48 [2020-07-07 11:33:42,459 INFO L226 Difference]: Without dead ends: 21 [2020-07-07 11:33:42,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-07 11:33:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-07 11:33:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-07 11:33:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-07-07 11:33:42,496 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2020-07-07 11:33:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:42,497 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-07-07 11:33:42,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-07-07 11:33:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:33:42,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:42,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:42,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:33:42,499 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:42,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2018685173, now seen corresponding path program 1 times [2020-07-07 11:33:42,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:42,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010695771] [2020-07-07 11:33:42,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:42,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010695771] [2020-07-07 11:33:42,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64026161] [2020-07-07 11:33:42,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,714 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:33:42,722 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:42,780 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:42,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:42,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-07 11:33:42,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130314834] [2020-07-07 11:33:42,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:33:42,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:42,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:33:42,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:42,823 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2020-07-07 11:33:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:42,958 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-07-07 11:33:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:33:42,959 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-07 11:33:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:42,963 INFO L225 Difference]: With dead ends: 41 [2020-07-07 11:33:42,963 INFO L226 Difference]: Without dead ends: 39 [2020-07-07 11:33:42,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:33:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-07 11:33:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-07-07 11:33:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-07 11:33:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-07-07 11:33:42,978 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2020-07-07 11:33:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:42,979 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-07-07 11:33:42,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:33:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-07-07 11:33:42,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:33:42,980 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:42,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:43,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:33:43,195 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:43,196 INFO L82 PathProgramCache]: Analyzing trace with hash 23130030, now seen corresponding path program 1 times [2020-07-07 11:33:43,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:43,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831652467] [2020-07-07 11:33:43,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:43,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831652467] [2020-07-07 11:33:43,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091374707] [2020-07-07 11:33:43,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,342 INFO L264 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:33:43,345 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:43,377 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:43,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:43,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-07 11:33:43,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720637527] [2020-07-07 11:33:43,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:33:43,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:43,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:33:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:43,413 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2020-07-07 11:33:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:43,556 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-07-07 11:33:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:33:43,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-07-07 11:33:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:43,565 INFO L225 Difference]: With dead ends: 51 [2020-07-07 11:33:43,565 INFO L226 Difference]: Without dead ends: 49 [2020-07-07 11:33:43,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:33:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-07 11:33:43,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-07-07 11:33:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-07 11:33:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-07-07 11:33:43,589 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2020-07-07 11:33:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:43,590 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-07-07 11:33:43,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:33:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-07-07 11:33:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:33:43,593 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:43,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:43,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:43,809 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:43,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash -786216596, now seen corresponding path program 1 times [2020-07-07 11:33:43,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:43,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469934578] [2020-07-07 11:33:43,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:43,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469934578] [2020-07-07 11:33:43,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876484902] [2020-07-07 11:33:43,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,949 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:33:43,951 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:43,975 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:44,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:44,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-07 11:33:44,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77381189] [2020-07-07 11:33:44,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:33:44,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:44,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:33:44,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:44,009 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 10 states. [2020-07-07 11:33:44,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:44,159 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-07-07 11:33:44,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:33:44,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-07-07 11:33:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:44,162 INFO L225 Difference]: With dead ends: 55 [2020-07-07 11:33:44,162 INFO L226 Difference]: Without dead ends: 53 [2020-07-07 11:33:44,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:33:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-07 11:33:44,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2020-07-07 11:33:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-07 11:33:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2020-07-07 11:33:44,182 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2020-07-07 11:33:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:44,183 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2020-07-07 11:33:44,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:33:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2020-07-07 11:33:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:33:44,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:44,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:44,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:44,386 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:44,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:44,387 INFO L82 PathProgramCache]: Analyzing trace with hash -986746962, now seen corresponding path program 1 times [2020-07-07 11:33:44,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:44,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791389972] [2020-07-07 11:33:44,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:44,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791389972] [2020-07-07 11:33:44,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172468747] [2020-07-07 11:33:44,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,458 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:33:44,460 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:44,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:33:44,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2020-07-07 11:33:44,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893248546] [2020-07-07 11:33:44,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:44,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:44,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:44,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:44,476 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 5 states. [2020-07-07 11:33:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:44,504 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-07-07 11:33:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:33:44,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-07 11:33:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:44,506 INFO L225 Difference]: With dead ends: 61 [2020-07-07 11:33:44,506 INFO L226 Difference]: Without dead ends: 29 [2020-07-07 11:33:44,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-07 11:33:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-07-07 11:33:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 11:33:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-07-07 11:33:44,517 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2020-07-07 11:33:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:44,517 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-07-07 11:33:44,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-07-07 11:33:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:33:44,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:44,519 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] [2020-07-07 11:33:44,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:44,732 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:44,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1470890089, now seen corresponding path program 1 times [2020-07-07 11:33:44,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:44,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341628304] [2020-07-07 11:33:44,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:44,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341628304] [2020-07-07 11:33:44,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824550449] [2020-07-07 11:33:44,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-07-07 11:33:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:44,887 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:33:44,889 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:44,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:33:44,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2020-07-07 11:33:44,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909760848] [2020-07-07 11:33:44,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:44,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:44,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:44,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:33:44,957 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-07-07 11:33:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:44,980 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-07-07 11:33:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:33:44,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-07 11:33:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:44,981 INFO L225 Difference]: With dead ends: 29 [2020-07-07 11:33:44,981 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:33:44,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:33:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:33:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:33:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:33:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:33:44,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-07-07 11:33:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:44,983 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:33:44,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:33:44,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:33:45,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-07 11:33:45,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:33:45,482 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:33:45,482 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:45,483 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:45,483 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:33:45,483 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:33:45,483 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:33:45,483 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:45,483 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-07 11:33:45,483 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:45,484 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:45,484 INFO L264 CegarLoopResult]: At program point L35-2(lines 35 39) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (< main_~n~0 2)) (.cse4 (<= 1 main_~i~0))) (or (and .cse0 (<= 2000 main_~k~0) .cse1 .cse2 (<= 0 main_~j~0) .cse3 .cse4) (and (<= main_~i~0 0) (<= main_~n~0 0) (<= main_~n~0 main_~j~0)) (and .cse0 (<= 1 main_~j~0) .cse1 .cse2 .cse3 .cse4))) [2020-07-07 11:33:45,484 INFO L268 CegarLoopResult]: For program point L35-3(lines 35 39) no Hoare annotation was computed. [2020-07-07 11:33:45,484 INFO L268 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-07-07 11:33:45,484 INFO L268 CegarLoopResult]: For program point L27(lines 27 32) no Hoare annotation was computed. [2020-07-07 11:33:45,485 INFO L264 CegarLoopResult]: At program point L29-2(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0))) (or (and (<= main_~i~0 0) .cse0 (<= 0 main_~i~0) .cse1 .cse2 (<= 0 main_~k~0)) (and .cse0 (<= 2000 main_~k~0) .cse1 .cse2 (< main_~n~0 2) (<= 1 main_~i~0)))) [2020-07-07 11:33:45,485 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 41) no Hoare annotation was computed. [2020-07-07 11:33:45,485 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 33) no Hoare annotation was computed. [2020-07-07 11:33:45,485 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 41) no Hoare annotation was computed. [2020-07-07 11:33:45,485 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~k~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 0 main_~j~0) (< main_~n~0 2) (<= 1 main_~i~0)) [2020-07-07 11:33:45,485 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-07-07 11:33:45,486 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 41) the Hoare annotation is: true [2020-07-07 11:33:45,486 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-07-07 11:33:45,486 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-07 11:33:45,486 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-07 11:33:45,486 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-07 11:33:45,486 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-07 11:33:45,486 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-07 11:33:45,487 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-07 11:33:45,487 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-07 11:33:45,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:33:45 BoogieIcfgContainer [2020-07-07 11:33:45,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:33:45,508 INFO L168 Benchmark]: Toolchain (without parser) took 4231.91 ms. Allocated memory was 145.8 MB in the beginning and 245.4 MB in the end (delta: 99.6 MB). Free memory was 103.5 MB in the beginning and 204.0 MB in the end (delta: -100.6 MB). Peak memory consumption was 111.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:45,509 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 11:33:45,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.69 ms. Allocated memory is still 145.8 MB. Free memory was 103.3 MB in the beginning and 93.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:45,511 INFO L168 Benchmark]: Boogie Preprocessor took 127.78 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 93.4 MB in the beginning and 181.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:45,512 INFO L168 Benchmark]: RCFGBuilder took 380.92 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 166.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:45,513 INFO L168 Benchmark]: TraceAbstraction took 3473.99 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 165.8 MB in the beginning and 204.0 MB in the end (delta: -38.2 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:45,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.69 ms. Allocated memory is still 145.8 MB. Free memory was 103.3 MB in the beginning and 93.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.78 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 93.4 MB in the beginning and 181.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.92 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 166.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3473.99 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 165.8 MB in the beginning and 204.0 MB in the end (delta: -38.2 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 23]: Loop Invariant Derived loop invariant: (((((i <= 0 && 10000 <= c3) && 0 <= i) && 4000 <= c1) && 2000 <= c2) && 0 <= k) || (((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && 2000 <= c2) && n < 2) && 1 <= i) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && 2000 <= c2) && 0 <= j) && n < 2) && 1 <= i) || ((i <= 0 && n <= 0) && n <= j)) || (((((10000 <= c3 && 1 <= j) && 4000 <= c1) && 2000 <= c2) && n < 2) && 1 <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 142 SDslu, 465 SDs, 0 SdLazy, 257 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 118 HoareAnnotationTreeSize, 12 FomulaSimplifications, 152 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 8384 SizeOfPredicates, 12 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 16/26 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...