/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:56:43,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:56:43,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:56:43,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:56:43,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:56:43,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:56:43,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:56:43,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:56:43,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:56:43,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:56:43,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:56:43,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:56:43,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:56:43,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:56:43,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:56:43,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:56:43,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:56:43,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:56:43,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:56:43,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:56:43,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:56:43,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:56:43,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:56:43,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:56:43,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 18:56:43,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 18:56:43,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 18:56:43,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 18:56:43,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 18:56:43,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 18:56:43,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 18:56:43,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 18:56:43,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 18:56:43,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 18:56:43,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 18:56:43,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 18:56:43,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 18:56:43,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 18:56:43,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:56:43,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:56:43,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:56:43,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 18:56:43,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:56:43,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:56:43,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:56:43,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:56:43,666 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:56:43,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:56:43,666 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 18:56:43,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:56:43,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:56:43,667 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 18:56:43,667 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 18:56:43,667 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 18:56:43,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:56:43,668 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 18:56:43,668 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:56:43,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:56:43,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:56:43,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:56:43,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:56:43,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:56:43,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:56:43,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:56:43,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:56:43,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:56:43,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:56:44,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:56:44,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:56:44,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:56:44,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:56:44,069 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:56:44,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-12-22 18:56:44,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4000ca00b/010dbd0aaa89477695c6b3b07d39fbe1/FLAG00db056d7 [2020-12-22 18:56:44,776 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:56:44,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-12-22 18:56:44,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4000ca00b/010dbd0aaa89477695c6b3b07d39fbe1/FLAG00db056d7 [2020-12-22 18:56:45,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4000ca00b/010dbd0aaa89477695c6b3b07d39fbe1 [2020-12-22 18:56:45,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:56:45,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:56:45,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:56:45,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:56:45,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:56:45,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a24f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45, skipping insertion in model container [2020-12-22 18:56:45,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:56:45,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:56:45,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:56:45,550 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:56:45,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:56:45,665 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:56:45,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45 WrapperNode [2020-12-22 18:56:45,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:56:45,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:56:45,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:56:45,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:56:45,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:56:45,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:56:45,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:56:45,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:56:45,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (1/1) ... [2020-12-22 18:56:45,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:56:45,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:56:45,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:56:45,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:56:45,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (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 18:56:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:56:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:56:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:56:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:56:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:56:46,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:56:46,231 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 18:56:46,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:46 BoogieIcfgContainer [2020-12-22 18:56:46,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:56:46,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:56:46,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:56:46,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:56:46,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:45" (1/3) ... [2020-12-22 18:56:46,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265afb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:46, skipping insertion in model container [2020-12-22 18:56:46,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45" (2/3) ... [2020-12-22 18:56:46,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265afb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:46, skipping insertion in model container [2020-12-22 18:56:46,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:46" (3/3) ... [2020-12-22 18:56:46,244 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2020-12-22 18:56:46,251 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:56:46,256 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 18:56:46,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 18:56:46,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:56:46,315 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 18:56:46,315 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:56:46,316 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:56:46,316 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:56:46,316 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:56:46,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:56:46,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:56:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-22 18:56:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 18:56:46,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:46,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 18:56:46,341 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:46,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:46,349 INFO L82 PathProgramCache]: Analyzing trace with hash 889510815, now seen corresponding path program 1 times [2020-12-22 18:56:46,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:46,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336005761] [2020-12-22 18:56:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:46,553 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 18:56:46,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336005761] [2020-12-22 18:56:46,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:46,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:56:46,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156951223] [2020-12-22 18:56:46,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:56:46,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:46,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:56:46,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:56:46,588 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-22 18:56:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:46,694 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-12-22 18:56:46,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:56:46,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 18:56:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:46,718 INFO L225 Difference]: With dead ends: 21 [2020-12-22 18:56:46,721 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 18:56:46,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:56:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 18:56:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-12-22 18:56:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 18:56:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-12-22 18:56:46,765 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2020-12-22 18:56:46,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:46,765 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-12-22 18:56:46,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:56:46,766 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2020-12-22 18:56:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 18:56:46,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:46,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 18:56:46,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:56:46,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:46,771 INFO L82 PathProgramCache]: Analyzing trace with hash 889512737, now seen corresponding path program 1 times [2020-12-22 18:56:46,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:46,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258904396] [2020-12-22 18:56:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:46,833 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 18:56:46,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258904396] [2020-12-22 18:56:46,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:46,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:56:46,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654287746] [2020-12-22 18:56:46,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:56:46,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:46,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:56:46,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:56:46,838 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 3 states. [2020-12-22 18:56:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:46,861 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-22 18:56:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:56:46,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 18:56:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:46,862 INFO L225 Difference]: With dead ends: 16 [2020-12-22 18:56:46,862 INFO L226 Difference]: Without dead ends: 15 [2020-12-22 18:56:46,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:56:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-22 18:56:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-12-22 18:56:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-22 18:56:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-22 18:56:46,870 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2020-12-22 18:56:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:46,871 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-22 18:56:46,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:56:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-22 18:56:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 18:56:46,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:46,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:46,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:56:46,873 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash 121446415, now seen corresponding path program 1 times [2020-12-22 18:56:46,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:46,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803620619] [2020-12-22 18:56:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:46,966 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 18:56:46,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803620619] [2020-12-22 18:56:46,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:46,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:56:46,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361108670] [2020-12-22 18:56:46,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:56:46,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:46,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:56:46,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:56:46,969 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-12-22 18:56:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:47,007 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-22 18:56:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:56:47,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 18:56:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:47,009 INFO L225 Difference]: With dead ends: 13 [2020-12-22 18:56:47,009 INFO L226 Difference]: Without dead ends: 13 [2020-12-22 18:56:47,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:56:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-22 18:56:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-22 18:56:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-22 18:56:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-22 18:56:47,012 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2020-12-22 18:56:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:47,013 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-22 18:56:47,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:56:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-22 18:56:47,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 18:56:47,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:47,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:47,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 18:56:47,014 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:47,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:47,015 INFO L82 PathProgramCache]: Analyzing trace with hash 121446416, now seen corresponding path program 1 times [2020-12-22 18:56:47,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:47,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317155980] [2020-12-22 18:56:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:47,099 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 18:56:47,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317155980] [2020-12-22 18:56:47,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:47,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:56:47,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406184600] [2020-12-22 18:56:47,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:56:47,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:47,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:56:47,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:56:47,103 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 5 states. [2020-12-22 18:56:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:47,149 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-12-22 18:56:47,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:56:47,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 18:56:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:47,151 INFO L225 Difference]: With dead ends: 20 [2020-12-22 18:56:47,151 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 18:56:47,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:56:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 18:56:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2020-12-22 18:56:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 18:56:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-22 18:56:47,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2020-12-22 18:56:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:47,156 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-22 18:56:47,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:56:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-22 18:56:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 18:56:47,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:47,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:47,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 18:56:47,158 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:47,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash -530130097, now seen corresponding path program 1 times [2020-12-22 18:56:47,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:47,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520306037] [2020-12-22 18:56:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:47,245 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 18:56:47,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520306037] [2020-12-22 18:56:47,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:47,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:56:47,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23118877] [2020-12-22 18:56:47,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:56:47,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:47,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:56:47,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:56:47,249 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2020-12-22 18:56:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:47,299 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-12-22 18:56:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:56:47,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-22 18:56:47,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:47,301 INFO L225 Difference]: With dead ends: 28 [2020-12-22 18:56:47,301 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 18:56:47,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:56:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 18:56:47,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2020-12-22 18:56:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 18:56:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-12-22 18:56:47,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2020-12-22 18:56:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:47,307 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-12-22 18:56:47,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:56:47,307 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-12-22 18:56:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 18:56:47,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:47,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:47,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 18:56:47,308 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:47,309 INFO L82 PathProgramCache]: Analyzing trace with hash -472871795, now seen corresponding path program 1 times [2020-12-22 18:56:47,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:47,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659489764] [2020-12-22 18:56:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:47,428 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 18:56:47,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659489764] [2020-12-22 18:56:47,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:47,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 18:56:47,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735343245] [2020-12-22 18:56:47,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:56:47,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:47,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:56:47,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:56:47,434 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 6 states. [2020-12-22 18:56:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:47,491 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-12-22 18:56:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:56:47,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-22 18:56:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:47,493 INFO L225 Difference]: With dead ends: 19 [2020-12-22 18:56:47,493 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 18:56:47,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:56:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 18:56:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-12-22 18:56:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 18:56:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-22 18:56:47,497 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2020-12-22 18:56:47,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:47,497 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-22 18:56:47,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:56:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-22 18:56:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 18:56:47,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:47,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:47,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 18:56:47,499 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:47,500 INFO L82 PathProgramCache]: Analyzing trace with hash -461287736, now seen corresponding path program 1 times [2020-12-22 18:56:47,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:47,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325189914] [2020-12-22 18:56:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:47,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325189914] [2020-12-22 18:56:47,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135459298] [2020-12-22 18:56:47,616 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 18:56:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:47,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 18:56:47,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:56:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:47,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:56:47,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 18:56:47,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972126969] [2020-12-22 18:56:47,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:56:47,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:47,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:56:47,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:56:47,789 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-12-22 18:56:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:47,848 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-12-22 18:56:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:56:47,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 18:56:47,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:47,850 INFO L225 Difference]: With dead ends: 26 [2020-12-22 18:56:47,850 INFO L226 Difference]: Without dead ends: 26 [2020-12-22 18:56:47,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:56:47,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-22 18:56:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-22 18:56:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 18:56:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-22 18:56:47,854 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2020-12-22 18:56:47,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:47,855 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-22 18:56:47,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:56:47,855 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-22 18:56:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 18:56:47,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:47,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:48,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:56:48,068 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:48,070 INFO L82 PathProgramCache]: Analyzing trace with hash 218770634, now seen corresponding path program 1 times [2020-12-22 18:56:48,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:48,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530732429] [2020-12-22 18:56:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:48,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530732429] [2020-12-22 18:56:48,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20961630] [2020-12-22 18:56:48,242 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 18:56:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:48,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 18:56:48,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:56:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:48,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:56:48,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 18:56:48,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098753881] [2020-12-22 18:56:48,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:56:48,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:48,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:56:48,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:56:48,424 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2020-12-22 18:56:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:48,512 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-12-22 18:56:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:56:48,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-22 18:56:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:48,514 INFO L225 Difference]: With dead ends: 41 [2020-12-22 18:56:48,514 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 18:56:48,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:56:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 18:56:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2020-12-22 18:56:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 18:56:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-22 18:56:48,525 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2020-12-22 18:56:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:48,526 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-22 18:56:48,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:56:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-22 18:56:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 18:56:48,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:48,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:48,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:56:48,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:48,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:48,746 INFO L82 PathProgramCache]: Analyzing trace with hash -174256376, now seen corresponding path program 1 times [2020-12-22 18:56:48,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:48,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776200133] [2020-12-22 18:56:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:48,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776200133] [2020-12-22 18:56:48,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937115978] [2020-12-22 18:56:48,925 INFO L95 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 [2020-12-22 18:56:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:48,979 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 18:56:48,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:56:49,058 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 18:56:49,063 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:56:49,072 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:56:49,074 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:56:49,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2020-12-22 18:56:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:49,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:56:49,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-22 18:56:49,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856537487] [2020-12-22 18:56:49,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 18:56:49,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:49,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 18:56:49,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-12-22 18:56:49,271 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 15 states. [2020-12-22 18:56:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:49,497 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-12-22 18:56:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:56:49,497 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-12-22 18:56:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:49,498 INFO L225 Difference]: With dead ends: 29 [2020-12-22 18:56:49,498 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 18:56:49,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-12-22 18:56:49,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 18:56:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-12-22 18:56:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 18:56:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-22 18:56:49,503 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2020-12-22 18:56:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:49,503 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-22 18:56:49,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 18:56:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-22 18:56:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 18:56:49,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:49,504 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:49,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:56:49,718 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:49,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:49,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1415019625, now seen corresponding path program 1 times [2020-12-22 18:56:49,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:49,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599466806] [2020-12-22 18:56:49,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 18:56:49,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599466806] [2020-12-22 18:56:49,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:49,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:56:49,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825509285] [2020-12-22 18:56:49,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:56:49,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:49,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:56:49,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:56:49,815 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-12-22 18:56:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:49,835 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-12-22 18:56:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:56:49,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 18:56:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:49,836 INFO L225 Difference]: With dead ends: 27 [2020-12-22 18:56:49,836 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 18:56:49,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:56:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 18:56:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 18:56:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 18:56:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-22 18:56:49,838 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-12-22 18:56:49,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:49,839 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-22 18:56:49,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:56:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-22 18:56:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 18:56:49,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:49,840 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:49,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 18:56:49,840 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 18:56:49,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:49,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1293876800, now seen corresponding path program 2 times [2020-12-22 18:56:49,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:49,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469694100] [2020-12-22 18:56:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:50,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469694100] [2020-12-22 18:56:50,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410736717] [2020-12-22 18:56:50,130 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 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 18:56:50,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:56:50,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:56:50,222 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-22 18:56:50,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:56:50,277 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 18:56:50,278 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:56:50,286 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:56:50,288 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:56:50,289 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2020-12-22 18:56:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:50,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:56:50,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-22 18:56:50,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371135641] [2020-12-22 18:56:50,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 18:56:50,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 18:56:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-12-22 18:56:50,612 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 19 states. [2020-12-22 18:56:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:51,116 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-22 18:56:51,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 18:56:51,116 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 16 [2020-12-22 18:56:51,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:51,117 INFO L225 Difference]: With dead ends: 21 [2020-12-22 18:56:51,117 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 18:56:51,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2020-12-22 18:56:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 18:56:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 18:56:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 18:56:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 18:56:51,118 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-22 18:56:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:51,119 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 18:56:51,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 18:56:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 18:56:51,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 18:56:51,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:56:51,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:51 BoogieIcfgContainer [2020-12-22 18:56:51,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 18:56:51,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 18:56:51,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 18:56:51,333 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 18:56:51,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:46" (3/4) ... [2020-12-22 18:56:51,344 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 18:56:51,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 18:56:51,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 18:56:51,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 18:56:51,420 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/openbsd_cbzero-alloca-2.i-witness.graphml [2020-12-22 18:56:51,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 18:56:51,422 INFO L168 Benchmark]: Toolchain (without parser) took 6314.43 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 125.8 MB in the beginning and 159.8 MB in the end (delta: -34.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 18:56:51,422 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.7 MB in the end (delta: 99.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 18:56:51,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 105.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 18:56:51,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 103.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 18:56:51,432 INFO L168 Benchmark]: Boogie Preprocessor took 27.30 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 102.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 18:56:51,432 INFO L168 Benchmark]: RCFGBuilder took 490.14 ms. Allocated memory is still 151.0 MB. Free memory was 102.5 MB in the beginning and 126.0 MB in the end (delta: -23.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 8.0 GB. [2020-12-22 18:56:51,437 INFO L168 Benchmark]: TraceAbstraction took 5096.88 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 125.4 MB in the beginning and 162.4 MB in the end (delta: -37.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 18:56:51,438 INFO L168 Benchmark]: Witness Printer took 87.41 ms. Allocated memory is still 183.5 MB. Free memory was 162.4 MB in the beginning and 159.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 18:56:51,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.7 MB in the end (delta: 99.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 556.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 105.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 103.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.30 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 102.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 490.14 ms. Allocated memory is still 151.0 MB. Free memory was 102.5 MB in the beginning and 126.0 MB in the end (delta: -23.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5096.88 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 125.4 MB in the beginning and 162.4 MB in the end (delta: -37.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 87.41 ms. Allocated memory is still 183.5 MB. Free memory was 162.4 MB in the beginning and 159.8 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: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 141 SDslu, 382 SDs, 0 SdLazy, 333 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 11 MinimizatonAttempts, 40 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 13113 SizeOfPredicates, 37 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 8/40 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...