/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/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:14:46,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:14:46,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:14:46,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-21 23:14:46,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-21 23:14:46,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-21 23:14:46,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-21 23:14:46,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-21 23:14:46,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-21 23:14:46,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-21 23:14:46,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-21 23:14:46,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-21 23:14:46,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 23:14:46,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 23:14:46,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 23:14:46,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 23:14:46,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 23:14:46,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 23:14:46,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 23:14:46,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 23:14:46,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 23:14:46,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 23:14:46,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 23:14:46,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 23:14:46,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-21 23:14:46,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-21 23:14:46,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-21 23:14:46,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-21 23:14:46,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-21 23:14:46,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-21 23:14:46,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-21 23:14:46,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-21 23:14:46,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-21 23:14:46,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 23:14:46,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 23:14:46,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 23:14:46,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:14:46,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:14:46,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:14:46,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:14:46,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:14:46,636 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:14:46,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:14:46,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:14:46,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:14:46,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:14:46,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:14:46,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:14:46,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:14:46,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:14:46,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:14:46,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:14:46,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:14:46,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:14:46,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:14:46,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:14:46,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:14:46,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:14:46,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:14:46,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:14:46,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:14:46,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:14:46,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:14:47,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:14:47,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:14:47,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:14:47,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:14:47,073 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:14:47,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-12-21 23:14:47,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ac09f42/490a552f2996490ea8f705e37cbf34a1/FLAG136f7cf31 [2020-12-21 23:14:47,733 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:14:47,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-12-21 23:14:47,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ac09f42/490a552f2996490ea8f705e37cbf34a1/FLAG136f7cf31 [2020-12-21 23:14:48,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ac09f42/490a552f2996490ea8f705e37cbf34a1 [2020-12-21 23:14:48,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:14:48,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:14:48,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:14:48,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:14:48,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:14:48,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184782c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48, skipping insertion in model container [2020-12-21 23:14:48,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:14:48,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:14:48,300 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/bitvector/soft_float_5a.c.cil.c[423,436] [2020-12-21 23:14:48,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:14:48,360 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:14:48,374 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/bitvector/soft_float_5a.c.cil.c[423,436] [2020-12-21 23:14:48,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:14:48,435 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:14:48,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48 WrapperNode [2020-12-21 23:14:48,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:14:48,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:14:48,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:14:48,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:14:48,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:14:48,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:14:48,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:14:48,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:14:48,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (1/1) ... [2020-12-21 23:14:48,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:14:48,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:14:48,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:14:48,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:14:48,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (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 [2020-12-21 23:14:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:14:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:14:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:14:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:14:49,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:14:49,299 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-21 23:14:49,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:49 BoogieIcfgContainer [2020-12-21 23:14:49,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:14:49,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:14:49,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:14:49,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:14:49,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:14:48" (1/3) ... [2020-12-21 23:14:49,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6240f0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:14:49, skipping insertion in model container [2020-12-21 23:14:49,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:48" (2/3) ... [2020-12-21 23:14:49,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6240f0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:14:49, skipping insertion in model container [2020-12-21 23:14:49,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:49" (3/3) ... [2020-12-21 23:14:49,315 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-12-21 23:14:49,322 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:14:49,328 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 23:14:49,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 23:14:49,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:14:49,379 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:14:49,379 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:14:49,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:14:49,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:14:49,379 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:14:49,379 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:14:49,379 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:14:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-12-21 23:14:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:14:49,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:49,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:49,406 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2020-12-21 23:14:49,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:49,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423110895] [2020-12-21 23:14:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:49,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423110895] [2020-12-21 23:14:49,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:49,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:14:49,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178711908] [2020-12-21 23:14:49,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:14:49,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:49,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:14:49,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:49,817 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-12-21 23:14:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:49,870 INFO L93 Difference]: Finished difference Result 150 states and 251 transitions. [2020-12-21 23:14:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:14:49,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:14:49,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:49,884 INFO L225 Difference]: With dead ends: 150 [2020-12-21 23:14:49,884 INFO L226 Difference]: Without dead ends: 68 [2020-12-21 23:14:49,888 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 [2020-12-21 23:14:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-21 23:14:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-21 23:14:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-21 23:14:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2020-12-21 23:14:49,936 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2020-12-21 23:14:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:49,936 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2020-12-21 23:14:49,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:14:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2020-12-21 23:14:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:14:49,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:49,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:49,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:14:49,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2020-12-21 23:14:49,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:49,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789899904] [2020-12-21 23:14:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:50,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789899904] [2020-12-21 23:14:50,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:50,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:14:50,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734801591] [2020-12-21 23:14:50,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:14:50,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:14:50,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:14:50,045 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand 4 states. [2020-12-21 23:14:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:50,131 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2020-12-21 23:14:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:14:50,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-12-21 23:14:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:50,136 INFO L225 Difference]: With dead ends: 88 [2020-12-21 23:14:50,136 INFO L226 Difference]: Without dead ends: 68 [2020-12-21 23:14:50,141 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 [2020-12-21 23:14:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-21 23:14:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-21 23:14:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-21 23:14:50,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-12-21 23:14:50,159 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2020-12-21 23:14:50,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:50,160 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-12-21 23:14:50,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:14:50,160 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-12-21 23:14:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:14:50,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:50,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:50,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:14:50,165 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:50,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:50,166 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2020-12-21 23:14:50,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:50,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138542226] [2020-12-21 23:14:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:50,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138542226] [2020-12-21 23:14:50,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:50,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:14:50,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647419161] [2020-12-21 23:14:50,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:14:50,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:50,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:14:50,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:50,262 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-12-21 23:14:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:50,398 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2020-12-21 23:14:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:14:50,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:14:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:50,404 INFO L225 Difference]: With dead ends: 119 [2020-12-21 23:14:50,405 INFO L226 Difference]: Without dead ends: 69 [2020-12-21 23:14:50,406 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 [2020-12-21 23:14:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-21 23:14:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-12-21 23:14:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-21 23:14:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-12-21 23:14:50,416 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2020-12-21 23:14:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:50,416 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-12-21 23:14:50,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:14:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-12-21 23:14:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:14:50,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:50,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:50,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:14:50,418 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:50,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:50,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2020-12-21 23:14:50,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:50,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030769279] [2020-12-21 23:14:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:50,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030769279] [2020-12-21 23:14:50,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:50,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:14:50,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632290663] [2020-12-21 23:14:50,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:14:50,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:50,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:14:50,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:50,470 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 3 states. [2020-12-21 23:14:50,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:50,530 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2020-12-21 23:14:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:14:50,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-21 23:14:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:50,535 INFO L225 Difference]: With dead ends: 129 [2020-12-21 23:14:50,535 INFO L226 Difference]: Without dead ends: 75 [2020-12-21 23:14:50,536 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 [2020-12-21 23:14:50,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-21 23:14:50,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-12-21 23:14:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-21 23:14:50,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2020-12-21 23:14:50,547 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2020-12-21 23:14:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:50,548 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2020-12-21 23:14:50,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:14:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2020-12-21 23:14:50,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-21 23:14:50,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:50,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:50,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:14:50,550 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:50,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:50,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2020-12-21 23:14:50,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:50,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048665206] [2020-12-21 23:14:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:50,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048665206] [2020-12-21 23:14:50,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:50,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:14:50,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961394486] [2020-12-21 23:14:50,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:14:50,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:50,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:14:50,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:14:50,667 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2020-12-21 23:14:50,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:50,894 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2020-12-21 23:14:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:14:50,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-21 23:14:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:50,899 INFO L225 Difference]: With dead ends: 136 [2020-12-21 23:14:50,899 INFO L226 Difference]: Without dead ends: 73 [2020-12-21 23:14:50,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:14:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-21 23:14:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-12-21 23:14:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-21 23:14:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2020-12-21 23:14:50,917 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2020-12-21 23:14:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:50,917 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2020-12-21 23:14:50,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:14:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-12-21 23:14:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-21 23:14:50,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:50,926 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:50,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:14:50,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:50,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:50,927 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2020-12-21 23:14:50,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:50,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556568448] [2020-12-21 23:14:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:51,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556568448] [2020-12-21 23:14:51,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620609713] [2020-12-21 23:14:51,019 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 [2020-12-21 23:14:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:51,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-21 23:14:51,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:51,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 23:14:51,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-21 23:14:51,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37610433] [2020-12-21 23:14:51,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 23:14:51,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:51,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 23:14:51,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:14:51,262 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand 5 states. [2020-12-21 23:14:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:51,345 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2020-12-21 23:14:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 23:14:51,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-21 23:14:51,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:51,348 INFO L225 Difference]: With dead ends: 160 [2020-12-21 23:14:51,348 INFO L226 Difference]: Without dead ends: 103 [2020-12-21 23:14:51,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:14:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-21 23:14:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-12-21 23:14:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-21 23:14:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-12-21 23:14:51,355 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2020-12-21 23:14:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:51,356 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-12-21 23:14:51,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 23:14:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-12-21 23:14:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-21 23:14:51,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:51,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:51,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-21 23:14:51,571 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:51,572 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2020-12-21 23:14:51,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:51,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407818961] [2020-12-21 23:14:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:51,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407818961] [2020-12-21 23:14:51,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713186987] [2020-12-21 23:14:51,660 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 [2020-12-21 23:14:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:51,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-21 23:14:51,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:51,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:51,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2020-12-21 23:14:51,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474734111] [2020-12-21 23:14:51,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:14:51,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:51,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:14:51,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-21 23:14:51,919 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 7 states. [2020-12-21 23:14:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:52,219 INFO L93 Difference]: Finished difference Result 159 states and 215 transitions. [2020-12-21 23:14:52,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-21 23:14:52,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-21 23:14:52,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:52,220 INFO L225 Difference]: With dead ends: 159 [2020-12-21 23:14:52,221 INFO L226 Difference]: Without dead ends: 90 [2020-12-21 23:14:52,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-12-21 23:14:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-21 23:14:52,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2020-12-21 23:14:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-21 23:14:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2020-12-21 23:14:52,228 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 35 [2020-12-21 23:14:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:52,229 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2020-12-21 23:14:52,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:14:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2020-12-21 23:14:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-21 23:14:52,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:52,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:52,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:52,442 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:52,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1367220671, now seen corresponding path program 1 times [2020-12-21 23:14:52,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:52,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944212045] [2020-12-21 23:14:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:52,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944212045] [2020-12-21 23:14:52,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051015809] [2020-12-21 23:14:52,555 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 [2020-12-21 23:14:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:52,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-21 23:14:52,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:52,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:52,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2020-12-21 23:14:52,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286645234] [2020-12-21 23:14:52,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-21 23:14:52,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:52,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-21 23:14:52,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-21 23:14:52,728 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand 6 states. [2020-12-21 23:14:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:52,845 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-12-21 23:14:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-21 23:14:52,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-12-21 23:14:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:52,847 INFO L225 Difference]: With dead ends: 77 [2020-12-21 23:14:52,847 INFO L226 Difference]: Without dead ends: 72 [2020-12-21 23:14:52,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-21 23:14:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-21 23:14:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2020-12-21 23:14:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-21 23:14:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2020-12-21 23:14:52,859 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 37 [2020-12-21 23:14:52,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:52,859 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2020-12-21 23:14:52,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-21 23:14:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2020-12-21 23:14:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-21 23:14:52,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:52,860 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:53,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:53,074 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:53,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1369067713, now seen corresponding path program 1 times [2020-12-21 23:14:53,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:53,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064351435] [2020-12-21 23:14:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:53,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064351435] [2020-12-21 23:14:53,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:53,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-21 23:14:53,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179930496] [2020-12-21 23:14:53,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 23:14:53,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:53,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 23:14:53,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:14:53,126 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand 5 states. [2020-12-21 23:14:53,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:53,160 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2020-12-21 23:14:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 23:14:53,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-21 23:14:53,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:53,161 INFO L225 Difference]: With dead ends: 72 [2020-12-21 23:14:53,161 INFO L226 Difference]: Without dead ends: 62 [2020-12-21 23:14:53,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-21 23:14:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-21 23:14:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-21 23:14:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-21 23:14:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-12-21 23:14:53,170 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 37 [2020-12-21 23:14:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:53,171 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-12-21 23:14:53,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 23:14:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-12-21 23:14:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-21 23:14:53,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:53,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:53,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-21 23:14:53,173 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash -896100667, now seen corresponding path program 1 times [2020-12-21 23:14:53,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:53,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20114297] [2020-12-21 23:14:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:53,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20114297] [2020-12-21 23:14:53,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853675792] [2020-12-21 23:14:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:53,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-21 23:14:53,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:53,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:53,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2020-12-21 23:14:53,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284586368] [2020-12-21 23:14:53,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-21 23:14:53,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:53,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-21 23:14:53,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-21 23:14:53,447 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 8 states. [2020-12-21 23:14:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:53,733 INFO L93 Difference]: Finished difference Result 133 states and 166 transitions. [2020-12-21 23:14:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-21 23:14:53,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-21 23:14:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:53,735 INFO L225 Difference]: With dead ends: 133 [2020-12-21 23:14:53,735 INFO L226 Difference]: Without dead ends: 88 [2020-12-21 23:14:53,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-12-21 23:14:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-21 23:14:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2020-12-21 23:14:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-21 23:14:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2020-12-21 23:14:53,740 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 38 [2020-12-21 23:14:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:53,740 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2020-12-21 23:14:53,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-21 23:14:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2020-12-21 23:14:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-21 23:14:53,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:53,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:53,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:53,956 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:53,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:53,957 INFO L82 PathProgramCache]: Analyzing trace with hash 964064688, now seen corresponding path program 1 times [2020-12-21 23:14:53,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:53,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205769212] [2020-12-21 23:14:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:54,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205769212] [2020-12-21 23:14:54,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086234384] [2020-12-21 23:14:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:54,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-21 23:14:54,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:54,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:54,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2020-12-21 23:14:54,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810868200] [2020-12-21 23:14:54,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:14:54,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:14:54,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-21 23:14:54,193 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand 7 states. [2020-12-21 23:14:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:54,347 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2020-12-21 23:14:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-21 23:14:54,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-12-21 23:14:54,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:54,349 INFO L225 Difference]: With dead ends: 89 [2020-12-21 23:14:54,349 INFO L226 Difference]: Without dead ends: 64 [2020-12-21 23:14:54,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-12-21 23:14:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-21 23:14:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-12-21 23:14:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-21 23:14:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-12-21 23:14:54,354 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 42 [2020-12-21 23:14:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:54,355 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-12-21 23:14:54,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:14:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-12-21 23:14:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-21 23:14:54,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:54,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:54,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-21 23:14:54,570 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash 123088613, now seen corresponding path program 1 times [2020-12-21 23:14:54,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:54,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742833310] [2020-12-21 23:14:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742833310] [2020-12-21 23:14:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503684163] [2020-12-21 23:14:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-21 23:14:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:54,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-21 23:14:54,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:54,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:54,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2020-12-21 23:14:54,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837596725] [2020-12-21 23:14:54,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-21 23:14:54,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:54,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-21 23:14:54,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-21 23:14:54,871 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 8 states. [2020-12-21 23:14:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:55,060 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2020-12-21 23:14:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-21 23:14:55,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-12-21 23:14:55,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:55,061 INFO L225 Difference]: With dead ends: 65 [2020-12-21 23:14:55,061 INFO L226 Difference]: Without dead ends: 0 [2020-12-21 23:14:55,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-12-21 23:14:55,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-21 23:14:55,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-21 23:14:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-21 23:14:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-21 23:14:55,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-12-21 23:14:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:55,063 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-21 23:14:55,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-21 23:14:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-21 23:14:55,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-21 23:14:55,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:55,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-21 23:14:55,611 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-21 23:14:55,611 INFO L189 CegarLoopUtils]: For program point L235(lines 235 244) no Hoare annotation was computed. [2020-12-21 23:14:55,611 INFO L189 CegarLoopUtils]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2020-12-21 23:14:55,611 INFO L189 CegarLoopUtils]: For program point L252(lines 252 256) no Hoare annotation was computed. [2020-12-21 23:14:55,611 INFO L189 CegarLoopUtils]: For program point L186(lines 186 203) no Hoare annotation was computed. [2020-12-21 23:14:55,611 INFO L189 CegarLoopUtils]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2020-12-21 23:14:55,611 INFO L189 CegarLoopUtils]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2020-12-21 23:14:55,612 INFO L189 CegarLoopUtils]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-12-21 23:14:55,612 INFO L189 CegarLoopUtils]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-12-21 23:14:55,612 INFO L189 CegarLoopUtils]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-12-21 23:14:55,612 INFO L189 CegarLoopUtils]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-12-21 23:14:55,612 INFO L185 CegarLoopUtils]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-12-21 23:14:55,612 INFO L185 CegarLoopUtils]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:55,613 INFO L185 CegarLoopUtils]: At program point L71-2(lines 20 73) the Hoare annotation is: (or (and (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-12-21 23:14:55,613 INFO L185 CegarLoopUtils]: At program point L71-3(lines 20 73) the Hoare annotation is: (let ((.cse0 (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0))) (or (and .cse0 (= ULTIMATE.start_base2flt_~__retres4~0 0)) (and (= ULTIMATE.start_main_~a~0 0) .cse0) (= ULTIMATE.start_main_~zero~0 0))) [2020-12-21 23:14:55,613 INFO L189 CegarLoopUtils]: For program point L187(lines 187 192) no Hoare annotation was computed. [2020-12-21 23:14:55,613 INFO L189 CegarLoopUtils]: For program point L171(lines 171 176) no Hoare annotation was computed. [2020-12-21 23:14:55,613 INFO L185 CegarLoopUtils]: At program point L72(lines 16 74) the Hoare annotation is: (and (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-12-21 23:14:55,613 INFO L189 CegarLoopUtils]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-12-21 23:14:55,613 INFO L185 CegarLoopUtils]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:55,613 INFO L185 CegarLoopUtils]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2020-12-21 23:14:55,614 INFO L185 CegarLoopUtils]: At program point L72-2(lines 16 74) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0))) [2020-12-21 23:14:55,614 INFO L189 CegarLoopUtils]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-12-21 23:14:55,614 INFO L185 CegarLoopUtils]: At program point L72-3(lines 16 74) the Hoare annotation is: (let ((.cse0 (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0))) (or (and (= ULTIMATE.start_main_~a~0 0) .cse0) (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) .cse0 (= ULTIMATE.start_base2flt_~__retres4~0 0)))) [2020-12-21 23:14:55,614 INFO L185 CegarLoopUtils]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:55,614 INFO L189 CegarLoopUtils]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-12-21 23:14:55,614 INFO L185 CegarLoopUtils]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:55,614 INFO L189 CegarLoopUtils]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2020-12-21 23:14:55,615 INFO L185 CegarLoopUtils]: At program point L39-7(lines 29 44) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-12-21 23:14:55,615 INFO L189 CegarLoopUtils]: For program point L238(lines 238 242) no Hoare annotation was computed. [2020-12-21 23:14:55,615 INFO L189 CegarLoopUtils]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2020-12-21 23:14:55,615 INFO L189 CegarLoopUtils]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-21 23:14:55,615 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-21 23:14:55,615 INFO L189 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-21 23:14:55,615 INFO L185 CegarLoopUtils]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0) (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0))) [2020-12-21 23:14:55,615 INFO L189 CegarLoopUtils]: For program point L27(lines 27 67) no Hoare annotation was computed. [2020-12-21 23:14:55,616 INFO L189 CegarLoopUtils]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2020-12-21 23:14:55,616 INFO L189 CegarLoopUtils]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2020-12-21 23:14:55,616 INFO L189 CegarLoopUtils]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2020-12-21 23:14:55,616 INFO L185 CegarLoopUtils]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0)) [2020-12-21 23:14:55,616 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-21 23:14:55,616 INFO L189 CegarLoopUtils]: For program point L177(lines 177 182) no Hoare annotation was computed. [2020-12-21 23:14:55,616 INFO L189 CegarLoopUtils]: For program point L195(lines 195 200) no Hoare annotation was computed. [2020-12-21 23:14:55,617 INFO L189 CegarLoopUtils]: For program point L30(lines 29 44) no Hoare annotation was computed. [2020-12-21 23:14:55,617 INFO L189 CegarLoopUtils]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2020-12-21 23:14:55,617 INFO L189 CegarLoopUtils]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2020-12-21 23:14:55,617 INFO L189 CegarLoopUtils]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2020-12-21 23:14:55,617 INFO L185 CegarLoopUtils]: At program point L65(lines 27 67) the Hoare annotation is: false [2020-12-21 23:14:55,617 INFO L185 CegarLoopUtils]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:55,617 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-21 23:14:55,617 INFO L185 CegarLoopUtils]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:55,618 INFO L185 CegarLoopUtils]: At program point L65-3(lines 27 67) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-12-21 23:14:55,618 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-12-21 23:14:55,618 INFO L185 CegarLoopUtils]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2020-12-21 23:14:55,618 INFO L185 CegarLoopUtils]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2020-12-21 23:14:55,618 INFO L185 CegarLoopUtils]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:55,618 INFO L185 CegarLoopUtils]: At program point L49-11(lines 49 64) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-12-21 23:14:55,618 INFO L189 CegarLoopUtils]: For program point L248(lines 248 264) no Hoare annotation was computed. [2020-12-21 23:14:55,618 INFO L192 CegarLoopUtils]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2020-12-21 23:14:55,619 INFO L189 CegarLoopUtils]: For program point L50(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:55,619 INFO L189 CegarLoopUtils]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:55,619 INFO L189 CegarLoopUtils]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:55,619 INFO L189 CegarLoopUtils]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:55,619 INFO L189 CegarLoopUtils]: For program point L249(lines 249 258) no Hoare annotation was computed. [2020-12-21 23:14:55,619 INFO L189 CegarLoopUtils]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2020-12-21 23:14:55,619 INFO L189 CegarLoopUtils]: For program point L150(lines 150 156) no Hoare annotation was computed. [2020-12-21 23:14:55,619 INFO L189 CegarLoopUtils]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2020-12-21 23:14:55,620 INFO L189 CegarLoopUtils]: For program point L51(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:55,620 INFO L189 CegarLoopUtils]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:55,620 INFO L189 CegarLoopUtils]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:55,620 INFO L189 CegarLoopUtils]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:55,620 INFO L192 CegarLoopUtils]: At program point L266(lines 212 268) the Hoare annotation is: true [2020-12-21 23:14:55,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:14:55 BoogieIcfgContainer [2020-12-21 23:14:55,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:14:55,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:14:55,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:14:55,663 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:14:55,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:49" (3/4) ... [2020-12-21 23:14:55,675 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-21 23:14:55,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-21 23:14:55,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-21 23:14:55,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:14:55,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:14:55,739 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == 0 && __retres4 == 0) && m == 0 [2020-12-21 23:14:55,742 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-12-21 23:14:55,744 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((a == 0 && zero % 4294967296 <= 0) || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-12-21 23:14:55,745 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 [2020-12-21 23:14:55,803 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/bitvector/soft_float_5a.c.cil.c-witness.graphml [2020-12-21 23:14:55,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:14:55,805 INFO L168 Benchmark]: Toolchain (without parser) took 7708.95 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 131.8 MB in the beginning and 68.5 MB in the end (delta: 63.3 MB). Peak memory consumption was 101.7 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:55,805 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 156.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:14:55,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.40 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 119.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:55,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.21 ms. Allocated memory is still 156.2 MB. Free memory was 119.2 MB in the beginning and 117.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:55,806 INFO L168 Benchmark]: Boogie Preprocessor took 50.22 ms. Allocated memory is still 156.2 MB. Free memory was 117.1 MB in the beginning and 115.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:55,807 INFO L168 Benchmark]: RCFGBuilder took 759.11 ms. Allocated memory is still 156.2 MB. Free memory was 115.2 MB in the beginning and 123.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:55,807 INFO L168 Benchmark]: TraceAbstraction took 6355.26 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 123.0 MB in the beginning and 74.3 MB in the end (delta: 48.8 MB). Peak memory consumption was 87.6 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:55,807 INFO L168 Benchmark]: Witness Printer took 140.18 ms. Allocated memory is still 194.0 MB. Free memory was 74.3 MB in the beginning and 68.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:55,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 156.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 339.40 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 119.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.21 ms. Allocated memory is still 156.2 MB. Free memory was 119.2 MB in the beginning and 117.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.22 ms. Allocated memory is still 156.2 MB. Free memory was 117.1 MB in the beginning and 115.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 759.11 ms. Allocated memory is still 156.2 MB. Free memory was 115.2 MB in the beginning and 123.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6355.26 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 123.0 MB in the beginning and 74.3 MB in the end (delta: 48.8 MB). Peak memory consumption was 87.6 MB. Max. memory is 8.0 GB. * Witness Printer took 140.18 ms. Allocated memory is still 194.0 MB. Free memory was 74.3 MB in the beginning and 68.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (zero % 4294967296 <= 0 && __retres4 == 0) || zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((a == 0 && zero % 4294967296 <= 0) || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sb == 1 && tmp == 1) || sb + 1 <= 0) || (__retres10 == 0 && zero % 4294967296 <= 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: __retres4 == 0 && m == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (\result == 0 && __retres4 == 0) && m == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((zero % 4294967296 <= 0 && __retres4 == 0) || (a == 0 && zero % 4294967296 <= 0)) || zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 970 SDtfs, 503 SDslu, 2167 SDs, 0 SdLazy, 666 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 312 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 105 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 65 NumberOfFragments, 206 HoareAnnotationTreeSize, 24 FomulaSimplifications, 654 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 640 NumberOfCodeBlocks, 640 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 39438 SizeOfPredicates, 38 NumberOfNonLiveVariables, 961 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 18/37 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...