/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/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:26:43,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:26:43,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:26:43,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 18:26:43,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:26:43,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:26:43,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:26:43,301 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 18:26:43,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:26:43,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:26:43,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:26:43,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:26:43,365 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:26:43,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:26:43,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:26:43,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:26:43,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:26:43,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:26:43,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:26:43,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:26:43,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:26:43,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:26:43,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:26:43,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:26:43,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:26:43,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:26:43,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:26:43,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:26:43,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:26:43,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:26:43,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:26:43,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:26:43,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:26:43,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:26:43,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:26:43,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:26:43,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:26:43,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:26:43,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:26:43,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:26:43,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:26:43,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:26:43,878 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:26:43,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-10-23 18:26:43,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c80d9234/0352fc7c26144c8fb39f23268806c965/FLAGbda4d151d [2020-10-23 18:26:44,643 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:26:44,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-10-23 18:26:44,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c80d9234/0352fc7c26144c8fb39f23268806c965/FLAGbda4d151d [2020-10-23 18:26:45,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c80d9234/0352fc7c26144c8fb39f23268806c965 [2020-10-23 18:26:45,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:26:45,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:26:45,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:26:45,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:26:45,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:26:45,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a187889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45, skipping insertion in model container [2020-10-23 18:26:45,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:26:45,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:26:45,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:26:45,260 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:26:45,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:26:45,303 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:26:45,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45 WrapperNode [2020-10-23 18:26:45,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:26:45,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:26:45,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:26:45,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:26:45,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (1/1) ... [2020-10-23 18:26:45,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:26:45,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:26:45,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:26:45,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:26:45,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:26:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:26:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:26:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:26:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-23 18:26:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:26:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:26:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:26:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:26:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:26:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:26:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 18:26:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:26:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:26:45,819 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:26:45,819 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:26:45,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:45 BoogieIcfgContainer [2020-10-23 18:26:45,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:26:45,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:26:45,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:26:45,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:26:45,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:26:45" (1/3) ... [2020-10-23 18:26:45,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a000998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:45, skipping insertion in model container [2020-10-23 18:26:45,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:45" (2/3) ... [2020-10-23 18:26:45,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a000998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:45, skipping insertion in model container [2020-10-23 18:26:45,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:45" (3/3) ... [2020-10-23 18:26:45,847 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-10-23 18:26:45,872 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:26:45,886 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:26:45,922 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:26:45,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:26:45,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:26:45,969 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:26:45,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:26:45,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:26:45,970 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:26:45,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:26:45,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:26:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-23 18:26:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:26:46,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:46,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:46,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:46,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1364032089, now seen corresponding path program 1 times [2020-10-23 18:26:46,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:46,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448848187] [2020-10-23 18:26:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 18:26:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,348 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 18:26:46,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448848187] [2020-10-23 18:26:46,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:26:46,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:26:46,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142014483] [2020-10-23 18:26:46,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:26:46,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:26:46,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:26:46,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:26:46,377 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-23 18:26:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:26:46,488 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-23 18:26:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:26:46,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-23 18:26:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:26:46,500 INFO L225 Difference]: With dead ends: 40 [2020-10-23 18:26:46,500 INFO L226 Difference]: Without dead ends: 18 [2020-10-23 18:26:46,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:26:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-23 18:26:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-23 18:26:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-23 18:26:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-23 18:26:46,548 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2020-10-23 18:26:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:26:46,549 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-23 18:26:46,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:26:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-23 18:26:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-23 18:26:46,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:46,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:46,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:26:46,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash 513696940, now seen corresponding path program 1 times [2020-10-23 18:26:46,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:46,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511272768] [2020-10-23 18:26:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 18:26:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,775 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 18:26:46,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511272768] [2020-10-23 18:26:46,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:26:46,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:26:46,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777997459] [2020-10-23 18:26:46,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:26:46,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:26:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:26:46,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:26:46,787 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-10-23 18:26:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:26:46,891 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-23 18:26:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:26:46,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-23 18:26:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:26:46,893 INFO L225 Difference]: With dead ends: 29 [2020-10-23 18:26:46,893 INFO L226 Difference]: Without dead ends: 20 [2020-10-23 18:26:46,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:26:46,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-23 18:26:46,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-23 18:26:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-23 18:26:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-23 18:26:46,903 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2020-10-23 18:26:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:26:46,903 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-23 18:26:46,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:26:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-23 18:26:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 18:26:46,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:46,905 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:46,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:26:46,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash -983927919, now seen corresponding path program 1 times [2020-10-23 18:26:46,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:46,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830885270] [2020-10-23 18:26:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:47,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 18:26:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:47,143 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 18:26:47,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830885270] [2020-10-23 18:26:47,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387558432] [2020-10-23 18:26:47,145 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 18:26:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:47,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-23 18:26:47,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:26:47,383 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2020-10-23 18:26:47,386 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:26:47,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:26:47,429 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 18:26:47,429 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:87, output treesize:83 [2020-10-23 18:26:47,524 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-23 18:26:47,526 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:26:47,529 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:26:47,529 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:26:47,530 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-23 18:26:47,539 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 18:26:47,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:26:47,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-10-23 18:26:47,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540047135] [2020-10-23 18:26:47,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:26:47,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:26:47,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:26:47,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:26:47,542 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2020-10-23 18:26:47,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:26:47,638 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-23 18:26:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:26:47,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-23 18:26:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:26:47,639 INFO L225 Difference]: With dead ends: 31 [2020-10-23 18:26:47,639 INFO L226 Difference]: Without dead ends: 22 [2020-10-23 18:26:47,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:26:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-23 18:26:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-23 18:26:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-23 18:26:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-23 18:26:47,647 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2020-10-23 18:26:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:26:47,647 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-23 18:26:47,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:26:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-23 18:26:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 18:26:47,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:47,649 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:47,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:26:47,863 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:47,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:47,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1387373258, now seen corresponding path program 2 times [2020-10-23 18:26:47,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:47,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282618749] [2020-10-23 18:26:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:48,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 18:26:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:26:48,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282618749] [2020-10-23 18:26:48,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626293353] [2020-10-23 18:26:48,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:26:48,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:26:48,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:26:48,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 18:26:48,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:26:48,146 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2020-10-23 18:26:48,146 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:26:48,155 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:26:48,157 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 18:26:48,158 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:87, output treesize:83 [2020-10-23 18:26:48,216 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-23 18:26:48,217 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:26:48,220 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:26:48,220 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:26:48,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-23 18:26:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:26:48,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:26:48,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2020-10-23 18:26:48,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240164959] [2020-10-23 18:26:48,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:26:48,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:26:48,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:26:48,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:26:48,231 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2020-10-23 18:26:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:26:48,338 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-23 18:26:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:26:48,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-23 18:26:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:26:48,340 INFO L225 Difference]: With dead ends: 33 [2020-10-23 18:26:48,340 INFO L226 Difference]: Without dead ends: 24 [2020-10-23 18:26:48,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:26:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-23 18:26:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-23 18:26:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-23 18:26:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-10-23 18:26:48,347 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2020-10-23 18:26:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:26:48,347 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-10-23 18:26:48,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:26:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-10-23 18:26:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 18:26:48,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:48,349 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:48,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:26:48,550 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:48,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:48,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1743679899, now seen corresponding path program 3 times [2020-10-23 18:26:48,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:48,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499821768] [2020-10-23 18:26:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:48,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:26:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:26:48,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499821768] [2020-10-23 18:26:48,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144201195] [2020-10-23 18:26:48,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:26:48,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-23 18:26:48,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:26:48,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-23 18:26:48,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:26:48,756 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2020-10-23 18:26:48,756 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:26:48,764 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:26:48,764 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:26:48,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-10-23 18:26:51,098 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_main_~#ad1~0.base_BEFORE_CALL_1| Int) (aux_div_main_~pa~0.offset_61 Int) (|v_main_~#ad1~0.offset_BEFORE_CALL_1| Int)) (= (select (select |c_#memory_int| |v_main_~#ad1~0.base_BEFORE_CALL_1|) (+ (* aux_div_main_~pa~0.offset_61 8) |v_main_~#ad1~0.offset_BEFORE_CALL_1|)) aux_div_main_~pa~0.offset_61)) is different from true [2020-10-23 18:27:01,292 WARN L193 SmtUtils]: Spent 10.13 s on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2020-10-23 18:27:01,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:27:01,320 WARN L313 ript$VariableManager]: TermVariabe aux_div_main_~pa~0.offset_61 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-23 18:27:01,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:27:01,348 WARN L313 ript$VariableManager]: TermVariabe aux_div_main_~pa~0.offset_61 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-23 18:27:01,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:27:01,370 WARN L313 ript$VariableManager]: TermVariabe aux_div_main_~pa~0.offset_61 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-23 18:27:01,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:27:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:27:01,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:27:01,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2020-10-23 18:27:01,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49734380] [2020-10-23 18:27:01,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 18:27:01,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:27:01,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 18:27:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=200, Unknown=1, NotChecked=28, Total=272 [2020-10-23 18:27:01,477 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 17 states. [2020-10-23 18:27:06,536 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 42 [2020-10-23 18:27:12,662 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 59 [2020-10-23 18:27:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:27:12,812 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-10-23 18:27:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 18:27:12,813 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2020-10-23 18:27:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:27:12,814 INFO L225 Difference]: With dead ends: 32 [2020-10-23 18:27:12,814 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:27:12,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=160, Invalid=653, Unknown=3, NotChecked=54, Total=870 [2020-10-23 18:27:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:27:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:27:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:27:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:27:12,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-10-23 18:27:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:27:12,817 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:27:12,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 18:27:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:27:12,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:27:13,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:27:13,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:27:13,187 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:27:13,188 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:27:13,188 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:27:13,188 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:27:13,188 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:27:13,188 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 18:27:13,188 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:27:13,189 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:27:13,189 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:27:13,189 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:27:13,189 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:27:13,189 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-23 18:27:13,189 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 33) no Hoare annotation was computed. [2020-10-23 18:27:13,189 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 16 40) no Hoare annotation was computed. [2020-10-23 18:27:13,189 INFO L274 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-10-23 18:27:13,190 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2020-10-23 18:27:13,190 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 16 40) no Hoare annotation was computed. [2020-10-23 18:27:13,190 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-10-23 18:27:13,190 INFO L270 CegarLoopResult]: At program point L32(lines 17 40) the Hoare annotation is: false [2020-10-23 18:27:13,190 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 16 40) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 18:27:13,190 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2020-10-23 18:27:13,191 INFO L270 CegarLoopResult]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (= main_~pa~0.base |main_~#ad1~0.base|) (let ((.cse0 (div (+ main_~pa~0.offset (* |main_~#ad1~0.offset| (- 1))) 8))) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)) (= (mod (+ main_~pa~0.offset (* |main_~#ad1~0.offset| 7)) 8) 0) (< main_~i~0 (+ (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset) 1))) [2020-10-23 18:27:13,191 INFO L270 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (and (= main_~pa~0.base |main_~#ad1~0.base|) (let ((.cse0 (div (+ main_~pa~0.offset (* |main_~#ad1~0.offset| (- 1))) 8))) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)) (= (mod (+ main_~pa~0.offset (* |main_~#ad1~0.offset| 7)) 8) 0) (< main_~i~0 (+ (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset) 1)) (exists ((aux_div_main_~pa~0.offset_61 Int) (aux_div_aux_mod_main_~pa~0.offset_61_36 Int)) (let ((.cse1 (select |#memory_int| |main_~#ad1~0.base|)) (.cse2 (* aux_div_main_~pa~0.offset_61 8))) (let ((.cse3 (select .cse1 (+ .cse2 (* aux_div_aux_mod_main_~pa~0.offset_61_36 8) |main_~#ad1~0.offset|))) (.cse4 (* 8 aux_div_aux_mod_main_~pa~0.offset_61_36))) (and (= (select .cse1 (+ .cse2 |main_~#ad1~0.offset|)) aux_div_main_~pa~0.offset_61) (<= .cse3 main_~i~0) (< .cse4 8) (< main_~i~0 (+ .cse3 1)) (<= 0 .cse4)))))) [2020-10-23 18:27:13,191 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 11 14) the Hoare annotation is: true [2020-10-23 18:27:13,191 INFO L274 CegarLoopResult]: For program point checkFINAL(lines 11 14) no Hoare annotation was computed. [2020-10-23 18:27:13,191 INFO L274 CegarLoopResult]: For program point checkEXIT(lines 11 14) no Hoare annotation was computed. [2020-10-23 18:27:13,202 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:27:13,203 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:27:13,209 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:27:13,209 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:27:13,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:27:13 BoogieIcfgContainer [2020-10-23 18:27:13,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:27:13,214 INFO L168 Benchmark]: Toolchain (without parser) took 28193.97 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 142.5 MB in the beginning and 134.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,215 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 120.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:27:13,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.48 ms. Allocated memory is still 166.7 MB. Free memory was 142.0 MB in the beginning and 132.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,216 INFO L168 Benchmark]: Boogie Preprocessor took 44.81 ms. Allocated memory is still 166.7 MB. Free memory was 132.4 MB in the beginning and 130.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,217 INFO L168 Benchmark]: RCFGBuilder took 469.87 ms. Allocated memory is still 166.7 MB. Free memory was 130.7 MB in the beginning and 149.0 MB in the end (delta: -18.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,218 INFO L168 Benchmark]: TraceAbstraction took 27387.19 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 149.0 MB in the beginning and 134.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,222 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 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 120.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.48 ms. Allocated memory is still 166.7 MB. Free memory was 142.0 MB in the beginning and 132.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.81 ms. Allocated memory is still 166.7 MB. Free memory was 132.4 MB in the beginning and 130.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 469.87 ms. Allocated memory is still 166.7 MB. Free memory was 130.7 MB in the beginning and 149.0 MB in the end (delta: -18.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27387.19 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 149.0 MB in the beginning and 134.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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: 28]: Loop Invariant [2020-10-23 18:27:13,230 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:27:13,230 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:27:13,231 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:27:13,231 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((pa == ad1 && unknown-#memory_int-unknown[ad1][(pa + ad1 * -1) / 8 * 8 + ad1] == (pa + ad1 * -1) / 8) && (pa + ad1 * 7) % 8 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.0s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 32 SDslu, 158 SDs, 0 SdLazy, 265 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 24.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 18 PreInvPairs, 23 NumberOfFragments, 186 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 270 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 159 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 151 ConstructedInterpolants, 5 QuantifiedInterpolants, 20159 SizeOfPredicates, 25 NumberOfNonLiveVariables, 421 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 9/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...