/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/loop-invariants/mod4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:46:16,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:46:16,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:46:16,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 18:46:16,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:46:16,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:46:16,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:46:16,371 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 [2020-10-23 18:46:16,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:46:16,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:46:16,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:46:16,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:46:16,401 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:46:16,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:46:16,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:46:16,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:46:16,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:46:16,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:46:16,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:46:16,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:46:16,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:46:16,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:46:16,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:46:16,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:46:16,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:46:16,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:46:16,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:46:16,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:46:16,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:46:16,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:46:16,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:46:16,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:46:16,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:46:16,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:46:16,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:46:16,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:46:16,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:46:16,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:46:16,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:46:16,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:46:16,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:46:16,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:46:16,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:46:16,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/mod4.c [2020-10-23 18:46:16,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358572d20/bed42982cae549e2a8bbab62bac9fcbf/FLAG56196e8da [2020-10-23 18:46:17,579 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:46:17,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4.c [2020-10-23 18:46:17,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358572d20/bed42982cae549e2a8bbab62bac9fcbf/FLAG56196e8da [2020-10-23 18:46:17,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358572d20/bed42982cae549e2a8bbab62bac9fcbf [2020-10-23 18:46:17,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:46:17,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:46:17,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:46:17,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:46:17,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:46:17,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:46:17" (1/1) ... [2020-10-23 18:46:17,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff699de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:17, skipping insertion in model container [2020-10-23 18:46:17,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:46:17" (1/1) ... [2020-10-23 18:46:17,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:46:18,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:46:18,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:46:18,192 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:46:18,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:46:18,231 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:46:18,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18 WrapperNode [2020-10-23 18:46:18,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:46:18,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:46:18,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:46:18,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:46:18,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (1/1) ... [2020-10-23 18:46:18,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (1/1) ... [2020-10-23 18:46:18,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (1/1) ... [2020-10-23 18:46:18,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (1/1) ... [2020-10-23 18:46:18,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (1/1) ... [2020-10-23 18:46:18,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (1/1) ... [2020-10-23 18:46:18,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (1/1) ... [2020-10-23 18:46:18,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:46:18,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:46:18,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:46:18,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:46:18,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (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 [2020-10-23 18:46:18,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:46:18,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:46:18,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:46:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:46:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:46:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:46:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:46:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:46:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:46:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:46:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:46:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:46:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:46:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:46:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:46:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:46:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:46:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:46:18,691 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:46:18,692 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:46:18,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:46:18 BoogieIcfgContainer [2020-10-23 18:46:18,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:46:18,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:46:18,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:46:18,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:46:18,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:46:17" (1/3) ... [2020-10-23 18:46:18,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8f34d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:46:18, skipping insertion in model container [2020-10-23 18:46:18,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:18" (2/3) ... [2020-10-23 18:46:18,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8f34d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:46:18, skipping insertion in model container [2020-10-23 18:46:18,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:46:18" (3/3) ... [2020-10-23 18:46:18,707 INFO L111 eAbstractionObserver]: Analyzing ICFG mod4.c [2020-10-23 18:46:18,725 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:46:18,731 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:46:18,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:46:18,810 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:46:18,811 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:46:18,811 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:46:18,811 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:46:18,811 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:46:18,812 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:46:18,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:46:18,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:46:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-23 18:46:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 18:46:18,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:18,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:18,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:18,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1253325290, now seen corresponding path program 1 times [2020-10-23 18:46:18,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:18,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614828123] [2020-10-23 18:46:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:19,336 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-23 18:46:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:46:19,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614828123] [2020-10-23 18:46:19,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:46:19,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:46:19,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264781343] [2020-10-23 18:46:19,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:46:19,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:19,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:46:19,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:46:19,393 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-23 18:46:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:19,485 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-23 18:46:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:46:19,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-23 18:46:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:19,500 INFO L225 Difference]: With dead ends: 37 [2020-10-23 18:46:19,500 INFO L226 Difference]: Without dead ends: 14 [2020-10-23 18:46:19,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:46:19,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-23 18:46:19,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-23 18:46:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-23 18:46:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-23 18:46:19,555 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-23 18:46:19,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:19,556 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-23 18:46:19,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:46:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-23 18:46:19,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:46:19,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:19,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:19,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:46:19,558 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:19,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:19,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1870115582, now seen corresponding path program 1 times [2020-10-23 18:46:19,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:19,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684013585] [2020-10-23 18:46:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:19,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:46:19,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684013585] [2020-10-23 18:46:19,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:46:19,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:46:19,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645442024] [2020-10-23 18:46:19,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:46:19,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:19,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:46:19,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:46:19,779 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2020-10-23 18:46:20,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:20,149 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-23 18:46:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:46:20,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-23 18:46:20,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:20,152 INFO L225 Difference]: With dead ends: 22 [2020-10-23 18:46:20,152 INFO L226 Difference]: Without dead ends: 16 [2020-10-23 18:46:20,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:46:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-23 18:46:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-23 18:46:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-23 18:46:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-23 18:46:20,163 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-10-23 18:46:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:20,163 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-23 18:46:20,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:46:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-23 18:46:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:46:20,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:20,165 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:20,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:46:20,166 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:20,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:20,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1601200473, now seen corresponding path program 1 times [2020-10-23 18:46:20,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:20,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652483030] [2020-10-23 18:46:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:20,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:46:20,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652483030] [2020-10-23 18:46:20,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132040135] [2020-10-23 18:46:20,432 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 [2020-10-23 18:46:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:20,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:46:20,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:46:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:46:20,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:46:20,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-10-23 18:46:20,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342414665] [2020-10-23 18:46:20,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:46:20,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:20,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:46:20,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:46:20,680 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2020-10-23 18:46:21,009 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 18:46:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:21,315 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-23 18:46:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 18:46:21,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-23 18:46:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:21,317 INFO L225 Difference]: With dead ends: 19 [2020-10-23 18:46:21,317 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:46:21,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:46:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:46:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:46:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:46:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:46:21,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-23 18:46:21,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:21,320 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:46:21,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:46:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:46:21,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:46:21,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:46:21,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:46:21,853 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 10 [2020-10-23 18:46:21,978 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 10 [2020-10-23 18:46:21,982 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:46:21,982 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:46:21,982 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:46:21,983 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:46:21,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:46:21,983 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 18:46:21,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:46:21,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:46:21,984 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:46:21,984 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:46:21,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:46:21,984 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-10-23 18:46:21,984 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2020-10-23 18:46:21,985 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-23 18:46:21,985 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2020-10-23 18:46:21,985 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2020-10-23 18:46:21,985 INFO L270 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 4))) (and (<= main_~x~0 (* 4 .cse0)) (< 0 .cse0))) (= main_~x~0 0)) [2020-10-23 18:46:21,985 INFO L270 CegarLoopResult]: At program point L13-4(lines 13 15) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 4))) (and (<= main_~x~0 (* 4 .cse0)) (< 0 .cse0))) (= main_~x~0 0)) [2020-10-23 18:46:21,986 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-23 18:46:21,986 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-23 18:46:21,986 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:46:21,986 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:46:21,986 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-23 18:46:21,986 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-23 18:46:22,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:46:22 BoogieIcfgContainer [2020-10-23 18:46:22,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:46:22,006 INFO L168 Benchmark]: Toolchain (without parser) took 4054.94 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 130.5 MB in the beginning and 105.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 57.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:22,007 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:46:22,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.76 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 120.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:22,009 INFO L168 Benchmark]: Boogie Preprocessor took 43.42 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:22,010 INFO L168 Benchmark]: RCFGBuilder took 416.40 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 106.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:22,011 INFO L168 Benchmark]: TraceAbstraction took 3307.48 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 105.9 MB in the beginning and 105.9 MB in the end (delta: 37.6 kB). Peak memory consumption was 32.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:22,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.76 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 120.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.42 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 416.40 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 106.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3307.48 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 105.9 MB in the beginning and 105.9 MB in the end (delta: 37.6 kB). Peak memory consumption was 32.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 13]: Loop Invariant Derived loop invariant: (x <= 4 * (x / 4) && 0 < x / 4) || x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 30 SDslu, 57 SDs, 0 SdLazy, 82 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 22 NumberOfFragments, 73 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 303 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 2751 SizeOfPredicates, 2 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 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...