/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:41:12,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:41:12,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:41:12,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:41:12,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:41:12,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:41:12,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:41:12,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:41:12,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:41:12,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:41:13,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:41:13,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-11-06 22:41:13,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:41:13,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:41:13,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:41:13,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:41:13,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:41:13,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:41:13,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:41:13,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:41:13,166 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:41:13,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:41:13,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:41:13,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:41:13,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:41:13,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:41:13,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:41:13,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:41:13,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:41:13,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:41:13,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:41:13,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:41:13,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:41:13,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:41:13,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:41:13,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:41:13,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:41:13,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:41:13,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:41:13,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:41:13,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:41:13,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:41:13,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:41:13,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:41:13,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:41:13,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:41:13,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:41:13,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:41:13,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:41:13,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:41:13,631 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:41:13,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-11-06 22:41:13,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1bba68b/00e87e9284c646868715e5fbeab7e191/FLAG56fefb794 [2020-11-06 22:41:14,691 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:41:14,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-11-06 22:41:14,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1bba68b/00e87e9284c646868715e5fbeab7e191/FLAG56fefb794 [2020-11-06 22:41:14,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1bba68b/00e87e9284c646868715e5fbeab7e191 [2020-11-06 22:41:14,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:41:14,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:41:14,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:41:14,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:41:14,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:41:14,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:14" (1/1) ... [2020-11-06 22:41:15,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c058000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15, skipping insertion in model container [2020-11-06 22:41:15,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:14" (1/1) ... [2020-11-06 22:41:15,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:41:15,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:41:15,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:41:15,292 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:41:15,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:41:15,417 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:41:15,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15 WrapperNode [2020-11-06 22:41:15,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:41:15,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:41:15,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:41:15,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:41:15,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (1/1) ... [2020-11-06 22:41:15,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (1/1) ... [2020-11-06 22:41:15,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (1/1) ... [2020-11-06 22:41:15,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (1/1) ... [2020-11-06 22:41:15,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (1/1) ... [2020-11-06 22:41:15,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (1/1) ... [2020-11-06 22:41:15,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (1/1) ... [2020-11-06 22:41:15,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:41:15,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:41:15,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:41:15,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:41:15,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (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 [2020-11-06 22:41:15,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:41:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:41:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:41:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:41:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:41:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:41:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:41:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:41:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:41:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:41:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:41:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:41:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:41:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:41:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:41:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:41:16,368 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:41:16,368 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 22:41:16,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:16 BoogieIcfgContainer [2020-11-06 22:41:16,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:41:16,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:41:16,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:41:16,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:41:16,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:14" (1/3) ... [2020-11-06 22:41:16,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55edd111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:16, skipping insertion in model container [2020-11-06 22:41:16,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:15" (2/3) ... [2020-11-06 22:41:16,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55edd111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:16, skipping insertion in model container [2020-11-06 22:41:16,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:16" (3/3) ... [2020-11-06 22:41:16,381 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-11-06 22:41:16,401 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:41:16,406 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:41:16,421 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:41:16,455 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:41:16,455 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:41:16,456 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:41:16,456 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:41:16,456 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:41:16,456 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:41:16,456 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:41:16,457 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:41:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-11-06 22:41:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-06 22:41:16,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:41:16,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:41:16,490 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:41:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:41:16,498 INFO L82 PathProgramCache]: Analyzing trace with hash 977275202, now seen corresponding path program 1 times [2020-11-06 22:41:16,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:41:16,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967100344] [2020-11-06 22:41:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:41:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:41:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:41:16,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967100344] [2020-11-06 22:41:16,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:41:16,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:41:16,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088177449] [2020-11-06 22:41:16,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:41:16,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:41:16,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:41:16,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:41:16,934 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-11-06 22:41:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:41:17,085 INFO L93 Difference]: Finished difference Result 141 states and 256 transitions. [2020-11-06 22:41:17,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:41:17,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-06 22:41:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:41:17,120 INFO L225 Difference]: With dead ends: 141 [2020-11-06 22:41:17,120 INFO L226 Difference]: Without dead ends: 62 [2020-11-06 22:41:17,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:41:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-06 22:41:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-06 22:41:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-06 22:41:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 92 transitions. [2020-11-06 22:41:17,218 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 92 transitions. Word has length 14 [2020-11-06 22:41:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:41:17,220 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 92 transitions. [2020-11-06 22:41:17,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:41:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 92 transitions. [2020-11-06 22:41:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:41:17,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:41:17,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:41:17,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:41:17,227 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:41:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:41:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash -441817252, now seen corresponding path program 1 times [2020-11-06 22:41:17,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:41:17,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219591713] [2020-11-06 22:41:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:41:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:41:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:41:17,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219591713] [2020-11-06 22:41:17,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:41:17,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:41:17,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182555086] [2020-11-06 22:41:17,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:41:17,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:41:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:41:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:41:17,407 INFO L87 Difference]: Start difference. First operand 62 states and 92 transitions. Second operand 4 states. [2020-11-06 22:41:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:41:17,813 INFO L93 Difference]: Finished difference Result 121 states and 182 transitions. [2020-11-06 22:41:17,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:41:17,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-06 22:41:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:41:17,818 INFO L225 Difference]: With dead ends: 121 [2020-11-06 22:41:17,818 INFO L226 Difference]: Without dead ends: 65 [2020-11-06 22:41:17,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:41:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-06 22:41:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-06 22:41:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-06 22:41:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 95 transitions. [2020-11-06 22:41:17,841 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 95 transitions. Word has length 15 [2020-11-06 22:41:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:41:17,841 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 95 transitions. [2020-11-06 22:41:17,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:41:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 95 transitions. [2020-11-06 22:41:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:41:17,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:41:17,843 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:41:17,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:41:17,843 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:41:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:41:17,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1903208065, now seen corresponding path program 1 times [2020-11-06 22:41:17,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:41:17,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789704622] [2020-11-06 22:41:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:41:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:17,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:41:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:41:17,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789704622] [2020-11-06 22:41:17,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:41:17,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:41:17,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460588777] [2020-11-06 22:41:17,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:41:17,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:41:17,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:41:17,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:41:17,974 INFO L87 Difference]: Start difference. First operand 65 states and 95 transitions. Second operand 4 states. [2020-11-06 22:41:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:41:18,210 INFO L93 Difference]: Finished difference Result 128 states and 191 transitions. [2020-11-06 22:41:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:41:18,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-06 22:41:18,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:41:18,213 INFO L225 Difference]: With dead ends: 128 [2020-11-06 22:41:18,213 INFO L226 Difference]: Without dead ends: 70 [2020-11-06 22:41:18,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:41:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-06 22:41:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-11-06 22:41:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-06 22:41:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 99 transitions. [2020-11-06 22:41:18,228 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 99 transitions. Word has length 20 [2020-11-06 22:41:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:41:18,229 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 99 transitions. [2020-11-06 22:41:18,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:41:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 99 transitions. [2020-11-06 22:41:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:41:18,230 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:41:18,230 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] [2020-11-06 22:41:18,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:41:18,231 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:41:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:41:18,232 INFO L82 PathProgramCache]: Analyzing trace with hash 323442577, now seen corresponding path program 1 times [2020-11-06 22:41:18,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:41:18,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345950424] [2020-11-06 22:41:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:41:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:41:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:41:18,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345950424] [2020-11-06 22:41:18,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:41:18,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:41:18,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316531319] [2020-11-06 22:41:18,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:41:18,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:41:18,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:41:18,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:41:18,344 INFO L87 Difference]: Start difference. First operand 69 states and 99 transitions. Second operand 4 states. [2020-11-06 22:41:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:41:18,651 INFO L93 Difference]: Finished difference Result 187 states and 278 transitions. [2020-11-06 22:41:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:41:18,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-06 22:41:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:41:18,654 INFO L225 Difference]: With dead ends: 187 [2020-11-06 22:41:18,654 INFO L226 Difference]: Without dead ends: 121 [2020-11-06 22:41:18,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:41:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-06 22:41:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2020-11-06 22:41:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-06 22:41:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2020-11-06 22:41:18,673 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 25 [2020-11-06 22:41:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:41:18,673 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2020-11-06 22:41:18,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:41:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2020-11-06 22:41:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-06 22:41:18,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:41:18,675 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:41:18,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:41:18,676 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:41:18,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:41:18,677 INFO L82 PathProgramCache]: Analyzing trace with hash -488257057, now seen corresponding path program 1 times [2020-11-06 22:41:18,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:41:18,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022379827] [2020-11-06 22:41:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:41:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:18,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:41:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:41:18,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022379827] [2020-11-06 22:41:18,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:41:18,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:41:18,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020669708] [2020-11-06 22:41:18,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:41:18,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:41:18,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:41:18,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:41:18,796 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 4 states. [2020-11-06 22:41:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:41:18,961 INFO L93 Difference]: Finished difference Result 184 states and 270 transitions. [2020-11-06 22:41:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:41:18,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-06 22:41:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:41:18,964 INFO L225 Difference]: With dead ends: 184 [2020-11-06 22:41:18,964 INFO L226 Difference]: Without dead ends: 78 [2020-11-06 22:41:18,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:41:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-06 22:41:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-06 22:41:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-06 22:41:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2020-11-06 22:41:18,976 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 32 [2020-11-06 22:41:18,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:41:18,976 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2020-11-06 22:41:18,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:41:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2020-11-06 22:41:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-06 22:41:18,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:41:18,978 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-11-06 22:41:18,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:41:18,979 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:41:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:41:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2067843122, now seen corresponding path program 1 times [2020-11-06 22:41:18,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:41:18,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970106233] [2020-11-06 22:41:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:41:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:19,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:41:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:41:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:41:19,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970106233] [2020-11-06 22:41:19,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:41:19,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:41:19,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920659559] [2020-11-06 22:41:19,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:41:19,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:41:19,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:41:19,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:41:19,171 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand 5 states. [2020-11-06 22:41:19,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:41:19,579 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2020-11-06 22:41:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:41:19,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-11-06 22:41:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:41:19,581 INFO L225 Difference]: With dead ends: 81 [2020-11-06 22:41:19,581 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:41:19,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:41:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:41:19,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:41:19,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:41:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:41:19,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-11-06 22:41:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:41:19,584 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:41:19,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:41:19,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:41:19,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:41:19,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 22:41:19,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:41:19,814 WARN L194 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2020-11-06 22:41:19,998 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 15 [2020-11-06 22:41:20,002 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-11-06 22:41:20,002 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-06 22:41:20,003 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-11-06 22:41:20,003 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-06 22:41:20,003 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:41:20,003 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|) (= |old(#valid)| |#valid|) (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~m_flush~0 |old(~m_flush~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-11-06 22:41:20,004 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:41:20,004 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:41:20,004 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:41:20,004 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:41:20,004 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:41:20,004 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 15 346) no Hoare annotation was computed. [2020-11-06 22:41:20,005 INFO L266 CegarLoopResult]: For program point L36(lines 36 51) no Hoare annotation was computed. [2020-11-06 22:41:20,005 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 15 346) no Hoare annotation was computed. [2020-11-06 22:41:20,005 INFO L266 CegarLoopResult]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-11-06 22:41:20,005 INFO L266 CegarLoopResult]: For program point L88(lines 88 103) no Hoare annotation was computed. [2020-11-06 22:41:20,005 INFO L266 CegarLoopResult]: For program point L55(lines 55 106) no Hoare annotation was computed. [2020-11-06 22:41:20,005 INFO L266 CegarLoopResult]: For program point L204(lines 204 219) no Hoare annotation was computed. [2020-11-06 22:41:20,005 INFO L266 CegarLoopResult]: For program point L72(lines 72 87) no Hoare annotation was computed. [2020-11-06 22:41:20,006 INFO L266 CegarLoopResult]: For program point L320(lines 320 335) no Hoare annotation was computed. [2020-11-06 22:41:20,006 INFO L266 CegarLoopResult]: For program point L188(lines 188 203) no Hoare annotation was computed. [2020-11-06 22:41:20,006 INFO L266 CegarLoopResult]: For program point L56(lines 56 71) no Hoare annotation was computed. [2020-11-06 22:41:20,006 INFO L262 CegarLoopResult]: At program point L337(lines 25 341) the Hoare annotation is: (or (= main_~q~0 0) (and (= main_~this_sink~0 0) (= main_~q~0 2)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2020-11-06 22:41:20,006 INFO L266 CegarLoopResult]: For program point L304(lines 304 319) no Hoare annotation was computed. [2020-11-06 22:41:20,006 INFO L266 CegarLoopResult]: For program point L172(lines 172 187) no Hoare annotation was computed. [2020-11-06 22:41:20,007 INFO L266 CegarLoopResult]: For program point L288(lines 288 303) no Hoare annotation was computed. [2020-11-06 22:41:20,007 INFO L266 CegarLoopResult]: For program point L156(lines 156 171) no Hoare annotation was computed. [2020-11-06 22:41:20,007 INFO L266 CegarLoopResult]: For program point L90(lines 90 101) no Hoare annotation was computed. [2020-11-06 22:41:20,007 INFO L266 CegarLoopResult]: For program point L272(lines 272 287) no Hoare annotation was computed. [2020-11-06 22:41:20,007 INFO L266 CegarLoopResult]: For program point L206(lines 206 217) no Hoare annotation was computed. [2020-11-06 22:41:20,007 INFO L266 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-11-06 22:41:20,007 INFO L266 CegarLoopResult]: For program point L107(lines 107 222) no Hoare annotation was computed. [2020-11-06 22:41:20,007 INFO L266 CegarLoopResult]: For program point L74(lines 74 85) no Hoare annotation was computed. [2020-11-06 22:41:20,008 INFO L266 CegarLoopResult]: For program point L322(lines 322 333) no Hoare annotation was computed. [2020-11-06 22:41:20,008 INFO L266 CegarLoopResult]: For program point L256(lines 256 271) no Hoare annotation was computed. [2020-11-06 22:41:20,008 INFO L266 CegarLoopResult]: For program point L223(lines 223 338) no Hoare annotation was computed. [2020-11-06 22:41:20,008 INFO L266 CegarLoopResult]: For program point L190(lines 190 201) no Hoare annotation was computed. [2020-11-06 22:41:20,008 INFO L266 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-11-06 22:41:20,008 INFO L266 CegarLoopResult]: For program point L58(lines 58 69) no Hoare annotation was computed. [2020-11-06 22:41:20,008 INFO L262 CegarLoopResult]: At program point L25-2(lines 25 341) the Hoare annotation is: (or (and (= main_~q~0 0) (= main_~this_sink~0 0)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2020-11-06 22:41:20,009 INFO L266 CegarLoopResult]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2020-11-06 22:41:20,009 INFO L266 CegarLoopResult]: For program point L306(lines 306 317) no Hoare annotation was computed. [2020-11-06 22:41:20,009 INFO L266 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-11-06 22:41:20,009 INFO L266 CegarLoopResult]: For program point L174(lines 174 185) no Hoare annotation was computed. [2020-11-06 22:41:20,009 INFO L266 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-11-06 22:41:20,009 INFO L266 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-11-06 22:41:20,009 INFO L266 CegarLoopResult]: For program point L290(lines 290 301) no Hoare annotation was computed. [2020-11-06 22:41:20,010 INFO L266 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-11-06 22:41:20,010 INFO L266 CegarLoopResult]: For program point L158(lines 158 169) no Hoare annotation was computed. [2020-11-06 22:41:20,010 INFO L266 CegarLoopResult]: For program point L274(lines 274 285) no Hoare annotation was computed. [2020-11-06 22:41:20,010 INFO L266 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-11-06 22:41:20,010 INFO L266 CegarLoopResult]: For program point L258(lines 258 269) no Hoare annotation was computed. [2020-11-06 22:41:20,010 INFO L266 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-11-06 22:41:20,010 INFO L266 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-11-06 22:41:20,010 INFO L266 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-11-06 22:41:20,011 INFO L266 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-11-06 22:41:20,011 INFO L266 CegarLoopResult]: For program point L94(lines 94 96) no Hoare annotation was computed. [2020-11-06 22:41:20,011 INFO L266 CegarLoopResult]: For program point L210(lines 210 212) no Hoare annotation was computed. [2020-11-06 22:41:20,011 INFO L266 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-11-06 22:41:20,011 INFO L266 CegarLoopResult]: For program point L326(lines 326 328) no Hoare annotation was computed. [2020-11-06 22:41:20,011 INFO L266 CegarLoopResult]: For program point L194(lines 194 196) no Hoare annotation was computed. [2020-11-06 22:41:20,011 INFO L266 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-11-06 22:41:20,012 INFO L266 CegarLoopResult]: For program point L310(lines 310 312) no Hoare annotation was computed. [2020-11-06 22:41:20,012 INFO L266 CegarLoopResult]: For program point L178(lines 178 180) no Hoare annotation was computed. [2020-11-06 22:41:20,012 INFO L262 CegarLoopResult]: At program point L327(lines 15 346) the Hoare annotation is: false [2020-11-06 22:41:20,012 INFO L266 CegarLoopResult]: For program point L294(lines 294 296) no Hoare annotation was computed. [2020-11-06 22:41:20,012 INFO L266 CegarLoopResult]: For program point L162(lines 162 164) no Hoare annotation was computed. [2020-11-06 22:41:20,012 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 15 346) the Hoare annotation is: true [2020-11-06 22:41:20,012 INFO L266 CegarLoopResult]: For program point L278(lines 278 280) no Hoare annotation was computed. [2020-11-06 22:41:20,013 INFO L266 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-11-06 22:41:20,013 INFO L266 CegarLoopResult]: For program point L262(lines 262 264) no Hoare annotation was computed. [2020-11-06 22:41:20,013 INFO L266 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-11-06 22:41:20,013 INFO L266 CegarLoopResult]: For program point L345(line 345) no Hoare annotation was computed. [2020-11-06 22:41:20,013 INFO L266 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-11-06 22:41:20,013 INFO L266 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-11-06 22:41:20,013 INFO L266 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-11-06 22:41:20,014 INFO L266 CegarLoopResult]: For program point L35(lines 35 54) no Hoare annotation was computed. [2020-11-06 22:41:20,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:41:20 BoogieIcfgContainer [2020-11-06 22:41:20,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:41:20,036 INFO L168 Benchmark]: Toolchain (without parser) took 5052.71 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.5 MB in the beginning and 72.4 MB in the end (delta: 56.2 MB). Peak memory consumption was 89.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:41:20,037 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:41:20,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.73 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 116.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:41:20,038 INFO L168 Benchmark]: Boogie Preprocessor took 60.32 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 114.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:41:20,039 INFO L168 Benchmark]: RCFGBuilder took 890.21 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 117.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:41:20,040 INFO L168 Benchmark]: TraceAbstraction took 3660.98 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 117.2 MB in the beginning and 72.4 MB in the end (delta: 44.8 MB). Peak memory consumption was 76.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:41:20,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 426.73 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 116.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.32 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 114.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 890.21 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 117.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3660.98 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 117.2 MB in the beginning and 72.4 MB in the end (delta: 44.8 MB). Peak memory consumption was 76.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 || (this_sink == 0 && q == 2)) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 539 SDtfs, 653 SDslu, 42 SDs, 0 SdLazy, 380 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 20 NumberOfFragments, 99 HoareAnnotationTreeSize, 13 FomulaSimplifications, 239 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 289 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 15016 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 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...