/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-new/count_by_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:37,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:37,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:37,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 18:44:37,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:37,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:37,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:37,093 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 18:44:37,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:37,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:37,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:37,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:37,125 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:37,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:37,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:37,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:37,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:37,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:37,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:37,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:37,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:37,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:37,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:37,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:37,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:37,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:37,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:37,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:37,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:37,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:37,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:37,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:37,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:37,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:37,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:37,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:37,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:37,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:37,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:37,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:37,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:37,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:37,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:37,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1.i [2020-10-23 18:44:37,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7683d2d4a/4107dfce26ad4b1d9c0616a524c73549/FLAG4faebac39 [2020-10-23 18:44:38,422 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:38,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1.i [2020-10-23 18:44:38,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7683d2d4a/4107dfce26ad4b1d9c0616a524c73549/FLAG4faebac39 [2020-10-23 18:44:38,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7683d2d4a/4107dfce26ad4b1d9c0616a524c73549 [2020-10-23 18:44:38,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:38,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:38,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:38,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:38,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:38,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:38" (1/1) ... [2020-10-23 18:44:38,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a28708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:38, skipping insertion in model container [2020-10-23 18:44:38,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:38" (1/1) ... [2020-10-23 18:44:38,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:38,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:39,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:39,024 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:39,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:39,060 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:39,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39 WrapperNode [2020-10-23 18:44:39,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:39,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:39,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:39,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:39,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2020-10-23 18:44:39,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2020-10-23 18:44:39,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2020-10-23 18:44:39,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2020-10-23 18:44:39,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2020-10-23 18:44:39,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2020-10-23 18:44:39,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2020-10-23 18:44:39,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:39,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:39,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:39,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:39,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (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 18:44:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:39,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:44:39,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:44:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:44:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:39,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:39,460 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:44:39,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:39 BoogieIcfgContainer [2020-10-23 18:44:39,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:39,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:39,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:39,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:39,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:38" (1/3) ... [2020-10-23 18:44:39,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153a8b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:39, skipping insertion in model container [2020-10-23 18:44:39,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (2/3) ... [2020-10-23 18:44:39,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153a8b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:39, skipping insertion in model container [2020-10-23 18:44:39,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:39" (3/3) ... [2020-10-23 18:44:39,473 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2020-10-23 18:44:39,490 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:39,495 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:39,535 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:39,569 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:39,569 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:39,569 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:39,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:39,570 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:39,570 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:39,570 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:39,570 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-23 18:44:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:44:39,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:39,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:39,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:39,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1926597601, now seen corresponding path program 1 times [2020-10-23 18:44:39,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:39,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146300900] [2020-10-23 18:44:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,057 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 18:44:40,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146300900] [2020-10-23 18:44:40,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:40,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:44:40,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601799954] [2020-10-23 18:44:40,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:44:40,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:40,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:44:40,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:44:40,085 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2020-10-23 18:44:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:40,212 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2020-10-23 18:44:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:44:40,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-23 18:44:40,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:40,223 INFO L225 Difference]: With dead ends: 41 [2020-10-23 18:44:40,223 INFO L226 Difference]: Without dead ends: 17 [2020-10-23 18:44:40,227 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 [2020-10-23 18:44:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-23 18:44:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-23 18:44:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-23 18:44:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-23 18:44:40,275 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-10-23 18:44:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:40,275 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-23 18:44:40,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:44:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-23 18:44:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:44:40,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:40,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:40,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:40,277 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:40,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:40,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2115061181, now seen corresponding path program 1 times [2020-10-23 18:44:40,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:40,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940331573] [2020-10-23 18:44:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:40,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940331573] [2020-10-23 18:44:40,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436939350] [2020-10-23 18:44:40,404 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 18:44:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-23 18:44:40,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:40,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:40,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-23 18:44:40,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948486368] [2020-10-23 18:44:40,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:44:40,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:40,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:44:40,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:40,560 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-10-23 18:44:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:40,668 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-23 18:44:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:44:40,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-23 18:44:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:40,670 INFO L225 Difference]: With dead ends: 26 [2020-10-23 18:44:40,670 INFO L226 Difference]: Without dead ends: 19 [2020-10-23 18:44:40,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:44:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-23 18:44:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-23 18:44:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-23 18:44:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-23 18:44:40,679 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-10-23 18:44:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:40,679 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-23 18:44:40,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:44:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-23 18:44:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-23 18:44:40,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:40,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:40,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:44:40,896 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:40,899 INFO L82 PathProgramCache]: Analyzing trace with hash -796252197, now seen corresponding path program 2 times [2020-10-23 18:44:40,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:40,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003516822] [2020-10-23 18:44:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:44:41,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003516822] [2020-10-23 18:44:41,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:41,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 18:44:41,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943794855] [2020-10-23 18:44:41,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:44:41,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:41,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:44:41,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:44:41,101 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-10-23 18:44:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:41,284 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-23 18:44:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 18:44:41,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-23 18:44:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:41,285 INFO L225 Difference]: With dead ends: 18 [2020-10-23 18:44:41,285 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:44:41,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:44:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:44:41,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:44:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:44:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:44:41,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-23 18:44:41,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:41,288 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:44:41,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:44:41,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:44:41,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:44:41,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:44:41,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:44:41,406 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:44:41,406 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:44:41,406 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:44:41,407 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:44:41,407 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:44:41,407 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:41,407 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:44:41,407 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:41,408 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:41,408 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:44:41,408 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:44:41,408 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:41,408 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 18:44:41,408 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:41,408 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:41,408 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:41,409 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 29) the Hoare annotation is: true [2020-10-23 18:44:41,409 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-10-23 18:44:41,409 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 29) no Hoare annotation was computed. [2020-10-23 18:44:41,409 INFO L274 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-10-23 18:44:41,409 INFO L270 CegarLoopResult]: At program point L26-3(line 26) the Hoare annotation is: (<= main_~i~0 1000000) [2020-10-23 18:44:41,409 INFO L270 CegarLoopResult]: At program point L26-4(line 26) the Hoare annotation is: (and (<= main_~i~0 1000000) (< 999999 main_~i~0)) [2020-10-23 18:44:41,410 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 29) no Hoare annotation was computed. [2020-10-23 18:44:41,410 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:41,410 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 18:44:41,410 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:41,410 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:44:41,410 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-23 18:44:41,410 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-23 18:44:41,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:41 BoogieIcfgContainer [2020-10-23 18:44:41,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:41,429 INFO L168 Benchmark]: Toolchain (without parser) took 2629.16 ms. Allocated memory is still 162.5 MB. Free memory was 139.2 MB in the beginning and 122.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:41,430 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory is still 103.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:41,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.29 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 128.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:41,432 INFO L168 Benchmark]: Boogie Preprocessor took 39.23 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:41,433 INFO L168 Benchmark]: RCFGBuilder took 359.07 ms. Allocated memory is still 162.5 MB. Free memory was 127.2 MB in the beginning and 145.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:41,434 INFO L168 Benchmark]: TraceAbstraction took 1962.73 ms. Allocated memory is still 162.5 MB. Free memory was 144.6 MB in the beginning and 122.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:41,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory is still 103.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.29 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 128.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.23 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 359.07 ms. Allocated memory is still 162.5 MB. Free memory was 127.2 MB in the beginning and 145.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1962.73 ms. Allocated memory is still 162.5 MB. Free memory was 144.6 MB in the beginning and 122.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 26]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 35 SDslu, 46 SDs, 0 SdLazy, 64 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 18 NumberOfFragments, 43 HoareAnnotationTreeSize, 15 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 137 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2248 SizeOfPredicates, 1 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/6 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...