/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-acceleration/diamond_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:24:41,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:24:41,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:24:41,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:24:41,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:24:41,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:24:41,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:24:41,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:24:41,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:24:41,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:24:41,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:24:41,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:24:41,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:24:41,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:24:41,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:24:41,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:24:41,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:24:41,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:24:41,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:24:41,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:24:41,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:24:41,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:24:41,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:24:41,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:24:41,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:24:41,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:24:41,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:24:41,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:24:41,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:24:41,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:24:41,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:24:41,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:24:41,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:24:41,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:24:41,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:24:41,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:24:41,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:24:41,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:24:41,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:24:41,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:24:41,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:24:41,619 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:24:41,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:24:41,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:24:41,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:24:41,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:24:41,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:24:41,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:24:41,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:24:41,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:24:41,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:24:41,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:24:41,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:24:41,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:24:41,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:24:41,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:24:41,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:24:41,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:24:41,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:24:41,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:24:41,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:24:41,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:24:41,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:24:42,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:24:42,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:24:42,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:24:42,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:24:42,125 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:24:42,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/diamond_2-2.c [2020-12-22 04:24:42,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874499264/100060e4400d46029a189706d3bcb202/FLAG5f5a5d36f [2020-12-22 04:24:42,874 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:24:42,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/diamond_2-2.c [2020-12-22 04:24:42,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874499264/100060e4400d46029a189706d3bcb202/FLAG5f5a5d36f [2020-12-22 04:24:43,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874499264/100060e4400d46029a189706d3bcb202 [2020-12-22 04:24:43,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:24:43,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:24:43,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:24:43,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:24:43,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:24:43,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aab675c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43, skipping insertion in model container [2020-12-22 04:24:43,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:24:43,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:24:43,533 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/diamond_2-2.c[373,386] [2020-12-22 04:24:43,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:24:43,584 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:24:43,601 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/diamond_2-2.c[373,386] [2020-12-22 04:24:43,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:24:43,630 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:24:43,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43 WrapperNode [2020-12-22 04:24:43,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:24:43,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:24:43,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:24:43,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:24:43,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:24:43,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:24:43,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:24:43,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:24:43,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (1/1) ... [2020-12-22 04:24:43,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:24:43,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:24:43,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:24:43,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:24:43,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (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 [2020-12-22 04:24:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:24:43,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:24:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:24:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:24:44,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:24:44,227 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 04:24:44,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:24:44 BoogieIcfgContainer [2020-12-22 04:24:44,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:24:44,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:24:44,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:24:44,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:24:44,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:24:43" (1/3) ... [2020-12-22 04:24:44,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226fa6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:24:44, skipping insertion in model container [2020-12-22 04:24:44,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:43" (2/3) ... [2020-12-22 04:24:44,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226fa6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:24:44, skipping insertion in model container [2020-12-22 04:24:44,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:24:44" (3/3) ... [2020-12-22 04:24:44,280 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2020-12-22 04:24:44,304 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:24:44,310 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:24:44,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:24:44,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:24:44,362 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:24:44,362 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:24:44,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:24:44,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:24:44,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:24:44,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:24:44,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:24:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-22 04:24:44,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:24:44,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:44,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:24:44,388 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash 891600039, now seen corresponding path program 1 times [2020-12-22 04:24:44,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:44,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917386751] [2020-12-22 04:24:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:44,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917386751] [2020-12-22 04:24:44,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:24:44,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:24:44,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896774577] [2020-12-22 04:24:44,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:24:44,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:44,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:24:44,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:24:44,620 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-22 04:24:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:44,642 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2020-12-22 04:24:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:24:44,644 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 04:24:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:44,655 INFO L225 Difference]: With dead ends: 27 [2020-12-22 04:24:44,656 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 04:24:44,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:24:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 04:24:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 04:24:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 04:24:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2020-12-22 04:24:44,704 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2020-12-22 04:24:44,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:44,704 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2020-12-22 04:24:44,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:24:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2020-12-22 04:24:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:24:44,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:44,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:24:44,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:24:44,706 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:44,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:44,708 INFO L82 PathProgramCache]: Analyzing trace with hash 889693415, now seen corresponding path program 1 times [2020-12-22 04:24:44,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:44,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813965352] [2020-12-22 04:24:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:44,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813965352] [2020-12-22 04:24:44,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:24:44,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:24:44,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571199024] [2020-12-22 04:24:44,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 04:24:44,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:44,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 04:24:44,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:24:44,883 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2020-12-22 04:24:44,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:44,958 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2020-12-22 04:24:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 04:24:44,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 04:24:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:44,966 INFO L225 Difference]: With dead ends: 23 [2020-12-22 04:24:44,967 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 04:24:44,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:24:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 04:24:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-12-22 04:24:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:24:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2020-12-22 04:24:44,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 6 [2020-12-22 04:24:44,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:44,979 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2020-12-22 04:24:44,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 04:24:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2020-12-22 04:24:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:24:44,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:44,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:24:44,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:24:44,983 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:44,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1797740634, now seen corresponding path program 1 times [2020-12-22 04:24:44,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:44,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432468082] [2020-12-22 04:24:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:45,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432468082] [2020-12-22 04:24:45,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:24:45,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:24:45,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163047576] [2020-12-22 04:24:45,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 04:24:45,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:45,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 04:24:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:24:45,076 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand 3 states. [2020-12-22 04:24:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:45,165 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2020-12-22 04:24:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 04:24:45,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 04:24:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:45,168 INFO L225 Difference]: With dead ends: 48 [2020-12-22 04:24:45,168 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 04:24:45,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:24:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 04:24:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-12-22 04:24:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 04:24:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-22 04:24:45,176 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 17 [2020-12-22 04:24:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:45,177 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-22 04:24:45,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 04:24:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-22 04:24:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:24:45,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:45,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:24:45,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 04:24:45,179 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:45,180 INFO L82 PathProgramCache]: Analyzing trace with hash -170777494, now seen corresponding path program 1 times [2020-12-22 04:24:45,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:45,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375907481] [2020-12-22 04:24:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:45,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375907481] [2020-12-22 04:24:45,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344196577] [2020-12-22 04:24:45,472 INFO L95 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 [2020-12-22 04:24:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:45,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 04:24:45,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:24:45,717 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:24:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:45,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:24:45,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 11 [2020-12-22 04:24:45,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486096446] [2020-12-22 04:24:45,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:24:45,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:45,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:24:45,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:24:45,746 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 11 states. [2020-12-22 04:24:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:45,937 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-12-22 04:24:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:24:45,938 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-12-22 04:24:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:45,939 INFO L225 Difference]: With dead ends: 57 [2020-12-22 04:24:45,939 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 04:24:45,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:24:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 04:24:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-22 04:24:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 04:24:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2020-12-22 04:24:45,946 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 17 [2020-12-22 04:24:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:45,946 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2020-12-22 04:24:45,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:24:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2020-12-22 04:24:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:24:45,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:45,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:24:46,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:24:46,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:46,167 INFO L82 PathProgramCache]: Analyzing trace with hash -784776342, now seen corresponding path program 1 times [2020-12-22 04:24:46,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:46,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951319053] [2020-12-22 04:24:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:46,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951319053] [2020-12-22 04:24:46,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:24:46,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:24:46,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086440249] [2020-12-22 04:24:46,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 04:24:46,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:46,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 04:24:46,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:24:46,208 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand 3 states. [2020-12-22 04:24:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:46,244 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-12-22 04:24:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 04:24:46,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 04:24:46,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:46,245 INFO L225 Difference]: With dead ends: 34 [2020-12-22 04:24:46,245 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 04:24:46,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:24:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 04:24:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-12-22 04:24:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:24:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-22 04:24:46,249 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 17 [2020-12-22 04:24:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:46,250 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-22 04:24:46,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 04:24:46,250 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-22 04:24:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:24:46,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:46,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:24:46,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 04:24:46,251 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash -843881686, now seen corresponding path program 1 times [2020-12-22 04:24:46,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:46,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99331313] [2020-12-22 04:24:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:46,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99331313] [2020-12-22 04:24:46,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81106789] [2020-12-22 04:24:46,496 INFO L95 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 [2020-12-22 04:24:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:46,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 04:24:46,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:24:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:46,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:24:46,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-12-22 04:24:46,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870291448] [2020-12-22 04:24:46,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 04:24:46,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:46,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 04:24:46,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-12-22 04:24:46,664 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 14 states. [2020-12-22 04:24:46,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:46,811 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-12-22 04:24:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 04:24:46,812 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-12-22 04:24:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:46,817 INFO L225 Difference]: With dead ends: 34 [2020-12-22 04:24:46,818 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 04:24:46,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-12-22 04:24:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 04:24:46,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-12-22 04:24:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 04:24:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-22 04:24:46,829 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 17 [2020-12-22 04:24:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:46,829 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-22 04:24:46,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 04:24:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-22 04:24:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 04:24:46,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:46,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 04:24:47,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:24:47,052 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:47,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2006766329, now seen corresponding path program 2 times [2020-12-22 04:24:47,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:47,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783211464] [2020-12-22 04:24:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:47,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783211464] [2020-12-22 04:24:47,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499203219] [2020-12-22 04:24:47,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-12-22 04:24:47,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:24:47,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:24:47,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-22 04:24:47,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:24:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:47,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:24:47,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-22 04:24:47,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597488968] [2020-12-22 04:24:47,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 04:24:47,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:47,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 04:24:47,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-12-22 04:24:47,701 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 24 states. [2020-12-22 04:24:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:48,077 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-12-22 04:24:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 04:24:48,078 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2020-12-22 04:24:48,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:48,079 INFO L225 Difference]: With dead ends: 45 [2020-12-22 04:24:48,079 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 04:24:48,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-12-22 04:24:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 04:24:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-12-22 04:24:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 04:24:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-12-22 04:24:48,085 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 28 [2020-12-22 04:24:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:48,085 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-12-22 04:24:48,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 04:24:48,085 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-12-22 04:24:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 04:24:48,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:48,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 04:24:48,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:24:48,300 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:48,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1182300406, now seen corresponding path program 3 times [2020-12-22 04:24:48,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:48,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055341924] [2020-12-22 04:24:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:49,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055341924] [2020-12-22 04:24:49,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021816850] [2020-12-22 04:24:49,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-12-22 04:24:49,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 04:24:49,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:24:49,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-22 04:24:49,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:24:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:49,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:24:49,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2020-12-22 04:24:49,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627242810] [2020-12-22 04:24:49,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 04:24:49,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:49,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 04:24:49,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 04:24:49,395 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 34 states. [2020-12-22 04:24:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:50,115 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-12-22 04:24:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 04:24:50,115 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2020-12-22 04:24:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:50,116 INFO L225 Difference]: With dead ends: 56 [2020-12-22 04:24:50,117 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 04:24:50,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 04:24:50,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 04:24:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-12-22 04:24:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 04:24:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-12-22 04:24:50,124 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 39 [2020-12-22 04:24:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:50,124 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-12-22 04:24:50,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-22 04:24:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-12-22 04:24:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 04:24:50,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:50,126 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-12-22 04:24:50,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:24:50,342 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:50,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:50,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1256465113, now seen corresponding path program 4 times [2020-12-22 04:24:50,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:50,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068356621] [2020-12-22 04:24:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:51,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068356621] [2020-12-22 04:24:51,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938913286] [2020-12-22 04:24:51,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:24:51,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 04:24:51,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:24:51,867 WARN L261 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 89 conjunts are in the unsatisfiable core [2020-12-22 04:24:51,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:24:54,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:24:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:55,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:24:55,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44] total 84 [2020-12-22 04:24:55,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591604662] [2020-12-22 04:24:55,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-12-22 04:24:55,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:55,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-12-22 04:24:55,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=6688, Unknown=0, NotChecked=0, Total=6972 [2020-12-22 04:24:55,051 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 84 states. [2020-12-22 04:24:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:24:56,428 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-12-22 04:24:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-22 04:24:56,429 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 50 [2020-12-22 04:24:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:24:56,430 INFO L225 Difference]: With dead ends: 67 [2020-12-22 04:24:56,430 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 04:24:56,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=284, Invalid=6688, Unknown=0, NotChecked=0, Total=6972 [2020-12-22 04:24:56,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 04:24:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-12-22 04:24:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 04:24:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-12-22 04:24:56,440 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 50 [2020-12-22 04:24:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:24:56,441 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-12-22 04:24:56,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-12-22 04:24:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-12-22 04:24:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 04:24:56,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:24:56,443 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2020-12-22 04:24:56,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:24:56,658 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:24:56,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:24:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 28672746, now seen corresponding path program 5 times [2020-12-22 04:24:56,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:24:56,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183073726] [2020-12-22 04:24:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:24:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:24:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-12-22 04:24:57,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183073726] [2020-12-22 04:24:57,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773734609] [2020-12-22 04:24:57,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:24:57,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-22 04:24:57,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:24:57,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 109 conjunts are in the unsatisfiable core [2020-12-22 04:24:57,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:24:59,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:24:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:24:59,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:24:59,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 54] total 57 [2020-12-22 04:24:59,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728004499] [2020-12-22 04:24:59,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-22 04:24:59,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:24:59,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-22 04:24:59,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=3003, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 04:24:59,759 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 57 states. [2020-12-22 04:25:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:25:02,333 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-12-22 04:25:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-12-22 04:25:02,333 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 61 [2020-12-22 04:25:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:25:02,334 INFO L225 Difference]: With dead ends: 75 [2020-12-22 04:25:02,334 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:25:02,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 11 SyntacticMatches, 48 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2020-12-22 04:25:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:25:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:25:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:25:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:25:02,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-12-22 04:25:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:25:02,338 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:25:02,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-22 04:25:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:25:02,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:25:02,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:25:02,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:25:02,672 INFO L189 CegarLoopUtils]: For program point L27-1(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,672 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-12-22 04:25:02,672 INFO L192 CegarLoopUtils]: At program point L7-2(lines 1 50) the Hoare annotation is: true [2020-12-22 04:25:02,672 INFO L189 CegarLoopUtils]: For program point L36-1(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,672 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:25:02,673 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:25:02,673 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:25:02,673 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-22 04:25:02,673 INFO L189 CegarLoopUtils]: For program point L24-1(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,673 INFO L185 CegarLoopUtils]: At program point L45-1(lines 17 47) the Hoare annotation is: (let ((.cse0 (<= (mod ULTIMATE.start_main_~y~0 2) 0))) (or (and (= ULTIMATE.start_main_~x~0 80) .cse0) (and (<= 20 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 20)) (and (not (= ULTIMATE.start_main_~y~0 (* (div ULTIMATE.start_main_~y~0 2) 2))) (= (+ ULTIMATE.start_main_~x~0 5) 0)) (= ULTIMATE.start_main_~x~0 0) (and (= 40 ULTIMATE.start_main_~x~0) .cse0) (and (= ULTIMATE.start_main_~x~0 100) .cse0) (and .cse0 (= ULTIMATE.start_main_~x~0 60)))) [2020-12-22 04:25:02,673 INFO L189 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2020-12-22 04:25:02,673 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:25:02,673 INFO L189 CegarLoopUtils]: For program point L33-1(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,674 INFO L189 CegarLoopUtils]: For program point L21-1(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,674 INFO L189 CegarLoopUtils]: For program point L17-2(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,674 INFO L189 CegarLoopUtils]: For program point L42-1(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,674 INFO L189 CegarLoopUtils]: For program point L30-1(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,674 INFO L189 CegarLoopUtils]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-12-22 04:25:02,674 INFO L189 CegarLoopUtils]: For program point L18-2(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,674 INFO L189 CegarLoopUtils]: For program point L39-1(lines 17 47) no Hoare annotation was computed. [2020-12-22 04:25:02,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:25:02 BoogieIcfgContainer [2020-12-22 04:25:02,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:25:02,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:25:02,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:25:02,699 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:25:02,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:24:44" (3/4) ... [2020-12-22 04:25:02,704 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:25:02,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-22 04:25:02,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:25:02,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:25:02,718 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:25:02,768 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-acceleration/diamond_2-2.c-witness.graphml [2020-12-22 04:25:02,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:25:02,771 INFO L168 Benchmark]: Toolchain (without parser) took 19523.16 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 126.5 MB in the beginning and 291.5 MB in the end (delta: -165.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:25:02,771 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:25:02,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.69 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:25:02,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:25:02,773 INFO L168 Benchmark]: Boogie Preprocessor took 31.46 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:25:02,774 INFO L168 Benchmark]: RCFGBuilder took 533.02 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 98.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-22 04:25:02,774 INFO L168 Benchmark]: TraceAbstraction took 18434.88 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 133.3 MB in the beginning and 294.1 MB in the end (delta: -160.8 MB). Peak memory consumption was 189.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:25:02,775 INFO L168 Benchmark]: Witness Printer took 69.66 ms. Allocated memory is still 314.6 MB. Free memory was 294.1 MB in the beginning and 291.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:25:02,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 379.69 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.46 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 533.02 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 98.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18434.88 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 133.3 MB in the beginning and 294.1 MB in the end (delta: -160.8 MB). Peak memory consumption was 189.1 MB. Max. memory is 8.0 GB. * Witness Printer took 69.66 ms. Allocated memory is still 314.6 MB. Free memory was 294.1 MB in the beginning and 291.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((x == 80 && y % 2 <= 0) || ((20 <= x && y % 2 <= 0) && x <= 20)) || (!(y == y / 2 * 2) && x + 5 == 0)) || x == 0) || (40 == x && y % 2 <= 0)) || (x == 100 && y % 2 <= 0)) || (y % 2 <= 0 && x == 60) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.1s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 47 SDslu, 296 SDs, 0 SdLazy, 7566 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 129 SyntacticMatches, 58 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=9, 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, 10 MinimizatonAttempts, 10 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 67 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 63 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 470 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 454 ConstructedInterpolants, 0 QuantifiedInterpolants, 182612 SizeOfPredicates, 12 NumberOfNonLiveVariables, 870 ConjunctsInSsa, 356 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 104/474 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...