/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/reducercommutativity/rangesum05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:31:38,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:31:38,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:31:38,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:31:38,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:31:38,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:31:38,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:31:38,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:31:38,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:31:38,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:31:38,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:31:38,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:31:38,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:31:38,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:31:38,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:31:38,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:31:38,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:31:38,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:31:38,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:31:38,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:31:38,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:31:38,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:31:38,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:31:38,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:31:38,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:31:38,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:31:38,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:31:38,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:31:38,933 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 [2020-07-07 11:31:38,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:31:38,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:31:38,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:31:38,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:31:38,971 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:31:38,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:31:38,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:31:38,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:31:38,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:31:38,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:31:38,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:31:38,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:31:38,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:31:38,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:31:38,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:31:38,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:31:38,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:31:38,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:31:38,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:31:38,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:31:38,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:31:38,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:31:38,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:31:38,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:31:38,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:31:38,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:31:38,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:31:38,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:31:38,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:31:38,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:31:39,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:31:39,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:31:39,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:31:39,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:31:39,316 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:31:39,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-07-07 11:31:39,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26e7115ed/53ce49b7ddcc4284bde2269689acc325/FLAG5fba79c8c [2020-07-07 11:31:39,858 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:31:39,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-07-07 11:31:39,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26e7115ed/53ce49b7ddcc4284bde2269689acc325/FLAG5fba79c8c [2020-07-07 11:31:40,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26e7115ed/53ce49b7ddcc4284bde2269689acc325 [2020-07-07 11:31:40,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:31:40,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:31:40,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:31:40,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:31:40,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:31:40,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ba6efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40, skipping insertion in model container [2020-07-07 11:31:40,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:31:40,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:31:40,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:31:40,481 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:31:40,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:31:40,519 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:31:40,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40 WrapperNode [2020-07-07 11:31:40,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:31:40,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:31:40,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:31:40,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:31:40,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (1/1) ... [2020-07-07 11:31:40,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:31:40,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:31:40,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:31:40,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:31:40,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (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 [2020-07-07 11:31:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:31:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:31:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-07-07 11:31:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-07-07 11:31:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:31:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:31:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:31:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-07-07 11:31:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:31:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-07-07 11:31:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:31:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:31:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:31:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:31:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:31:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:31:41,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:31:41,122 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 11:31:41,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:31:41 BoogieIcfgContainer [2020-07-07 11:31:41,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:31:41,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:31:41,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:31:41,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:31:41,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:31:40" (1/3) ... [2020-07-07 11:31:41,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6bd590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:31:41, skipping insertion in model container [2020-07-07 11:31:41,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:40" (2/3) ... [2020-07-07 11:31:41,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6bd590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:31:41, skipping insertion in model container [2020-07-07 11:31:41,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:31:41" (3/3) ... [2020-07-07 11:31:41,133 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2020-07-07 11:31:41,140 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:31:41,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:31:41,161 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:31:41,184 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:31:41,184 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:31:41,184 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:31:41,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:31:41,185 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:31:41,185 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:31:41,185 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:31:41,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:31:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-07 11:31:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 11:31:41,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:41,209 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:41,210 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:41,214 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2020-07-07 11:31:41,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:41,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265690059] [2020-07-07 11:31:41,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:41,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265690059] [2020-07-07 11:31:41,357 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-07-07 11:31:41,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743785807] [2020-07-07 11:31:41,358 INFO L94 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 [2020-07-07 11:31:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:41,460 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-07 11:31:41,468 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-07 11:31:41,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:41,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 11:31:41,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836586051] [2020-07-07 11:31:41,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 11:31:41,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 11:31:41,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:31:41,526 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-07-07 11:31:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:41,551 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-07-07 11:31:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 11:31:41,553 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-07-07 11:31:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:41,562 INFO L225 Difference]: With dead ends: 64 [2020-07-07 11:31:41,562 INFO L226 Difference]: Without dead ends: 32 [2020-07-07 11:31:41,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:31:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-07 11:31:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-07 11:31:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 11:31:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-07-07 11:31:41,612 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 37 [2020-07-07 11:31:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:41,613 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-07-07 11:31:41,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 11:31:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-07-07 11:31:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 11:31:41,616 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:41,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:41,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-07 11:31:41,831 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:41,832 INFO L82 PathProgramCache]: Analyzing trace with hash -991975144, now seen corresponding path program 1 times [2020-07-07 11:31:41,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:41,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222485728] [2020-07-07 11:31:41,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:41,858 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:41,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734915737] [2020-07-07 11:31:41,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:41,925 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-07 11:31:41,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-07 11:31:41,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222485728] [2020-07-07 11:31:41,967 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:41,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734915737] [2020-07-07 11:31:41,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:41,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:31:41,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300338984] [2020-07-07 11:31:41,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:31:41,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:41,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:31:41,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:41,970 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2020-07-07 11:31:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:41,990 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-07-07 11:31:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:31:41,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-07 11:31:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:41,993 INFO L225 Difference]: With dead ends: 56 [2020-07-07 11:31:41,993 INFO L226 Difference]: Without dead ends: 34 [2020-07-07 11:31:41,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-07 11:31:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-07-07 11:31:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-07 11:31:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-07-07 11:31:42,005 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2020-07-07 11:31:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:42,005 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-07-07 11:31:42,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:31:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-07-07 11:31:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-07 11:31:42,008 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:42,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:42,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:42,224 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:42,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:42,225 INFO L82 PathProgramCache]: Analyzing trace with hash 479004822, now seen corresponding path program 1 times [2020-07-07 11:31:42,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:42,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010133319] [2020-07-07 11:31:42,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:42,268 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:42,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245526961] [2020-07-07 11:31:42,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:42,343 INFO L264 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-07 11:31:42,346 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:31:42,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010133319] [2020-07-07 11:31:42,360 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:42,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245526961] [2020-07-07 11:31:42,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:42,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:31:42,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584545680] [2020-07-07 11:31:42,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:31:42,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:31:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:42,363 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 3 states. [2020-07-07 11:31:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:42,384 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-07-07 11:31:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:31:42,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-07-07 11:31:42,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:42,386 INFO L225 Difference]: With dead ends: 54 [2020-07-07 11:31:42,386 INFO L226 Difference]: Without dead ends: 36 [2020-07-07 11:31:42,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-07 11:31:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-07-07 11:31:42,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-07 11:31:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-07-07 11:31:42,395 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 39 [2020-07-07 11:31:42,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:42,395 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-07-07 11:31:42,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:31:42,396 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-07-07 11:31:42,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-07 11:31:42,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:42,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:42,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:42,612 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:42,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1719401286, now seen corresponding path program 1 times [2020-07-07 11:31:42,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:42,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673226453] [2020-07-07 11:31:42,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:42,643 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:42,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712426519] [2020-07-07 11:31:42,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:42,739 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-07 11:31:42,742 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-07 11:31:42,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673226453] [2020-07-07 11:31:42,762 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:42,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712426519] [2020-07-07 11:31:42,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:42,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:31:42,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586964873] [2020-07-07 11:31:42,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:31:42,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:42,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:31:42,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:42,764 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2020-07-07 11:31:42,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:42,778 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2020-07-07 11:31:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:31:42,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-07 11:31:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:42,781 INFO L225 Difference]: With dead ends: 52 [2020-07-07 11:31:42,781 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 11:31:42,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 11:31:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-07-07 11:31:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-07 11:31:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-07-07 11:31:42,788 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 48 [2020-07-07 11:31:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:42,791 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-07-07 11:31:42,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:31:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-07-07 11:31:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-07 11:31:42,792 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:42,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:43,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:43,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:43,008 INFO L82 PathProgramCache]: Analyzing trace with hash 494084840, now seen corresponding path program 1 times [2020-07-07 11:31:43,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:43,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741465743] [2020-07-07 11:31:43,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:43,023 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:43,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929906158] [2020-07-07 11:31:43,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,092 INFO L264 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:31:43,110 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-07 11:31:43,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741465743] [2020-07-07 11:31:43,125 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:43,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929906158] [2020-07-07 11:31:43,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:43,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:31:43,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871543791] [2020-07-07 11:31:43,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:31:43,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:43,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:31:43,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:43,130 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2020-07-07 11:31:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:43,268 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2020-07-07 11:31:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:31:43,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-07-07 11:31:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:43,272 INFO L225 Difference]: With dead ends: 63 [2020-07-07 11:31:43,272 INFO L226 Difference]: Without dead ends: 42 [2020-07-07 11:31:43,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:43,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-07 11:31:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-07-07 11:31:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-07 11:31:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-07 11:31:43,281 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 50 [2020-07-07 11:31:43,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:43,281 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-07 11:31:43,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:31:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-07 11:31:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-07 11:31:43,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:43,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:43,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:43,499 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:43,500 INFO L82 PathProgramCache]: Analyzing trace with hash 125205893, now seen corresponding path program 1 times [2020-07-07 11:31:43,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:43,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892726199] [2020-07-07 11:31:43,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-07 11:31:43,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892726199] [2020-07-07 11:31:43,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969080799] [2020-07-07 11:31:43,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,712 INFO L264 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:31:43,714 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-07 11:31:43,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:31:43,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 8 [2020-07-07 11:31:43,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303078568] [2020-07-07 11:31:43,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:31:43,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:43,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:31:43,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:31:43,726 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 8 states. [2020-07-07 11:31:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:43,955 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2020-07-07 11:31:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:31:43,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-07-07 11:31:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:43,957 INFO L225 Difference]: With dead ends: 76 [2020-07-07 11:31:43,957 INFO L226 Difference]: Without dead ends: 47 [2020-07-07 11:31:43,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:31:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-07 11:31:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-07-07 11:31:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-07 11:31:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-07-07 11:31:43,967 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 50 [2020-07-07 11:31:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:43,968 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-07-07 11:31:43,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:31:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-07-07 11:31:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-07 11:31:43,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:43,970 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:44,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:44,183 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:44,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:44,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1369912335, now seen corresponding path program 2 times [2020-07-07 11:31:44,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:44,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797676105] [2020-07-07 11:31:44,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-07-07 11:31:44,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797676105] [2020-07-07 11:31:44,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148736212] [2020-07-07 11:31:44,378 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:44,458 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:31:44,458 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:31:44,461 INFO L264 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:31:44,470 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-07-07 11:31:44,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:31:44,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-07-07 11:31:44,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52224433] [2020-07-07 11:31:44,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:31:44,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:44,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:31:44,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:31:44,486 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 7 states. [2020-07-07 11:31:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:44,663 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2020-07-07 11:31:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:31:44,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-07-07 11:31:44,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:44,664 INFO L225 Difference]: With dead ends: 80 [2020-07-07 11:31:44,665 INFO L226 Difference]: Without dead ends: 48 [2020-07-07 11:31:44,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:31:44,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-07 11:31:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-07 11:31:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-07 11:31:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-07-07 11:31:44,673 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 61 [2020-07-07 11:31:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:44,673 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-07-07 11:31:44,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:31:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-07-07 11:31:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-07 11:31:44,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:44,675 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:44,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:44,888 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:44,889 INFO L82 PathProgramCache]: Analyzing trace with hash 190779759, now seen corresponding path program 3 times [2020-07-07 11:31:44,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:44,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766664326] [2020-07-07 11:31:44,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-07-07 11:31:44,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766664326] [2020-07-07 11:31:44,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607577035] [2020-07-07 11:31:44,994 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:45,047 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-07 11:31:45,048 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:31:45,049 INFO L264 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:31:45,051 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-07-07 11:31:45,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:31:45,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2020-07-07 11:31:45,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288797406] [2020-07-07 11:31:45,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:31:45,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:45,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:31:45,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:31:45,081 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 4 states. [2020-07-07 11:31:45,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:45,103 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-07-07 11:31:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:31:45,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-07-07 11:31:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:45,105 INFO L225 Difference]: With dead ends: 78 [2020-07-07 11:31:45,105 INFO L226 Difference]: Without dead ends: 50 [2020-07-07 11:31:45,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:31:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-07 11:31:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-07-07 11:31:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-07 11:31:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-07-07 11:31:45,114 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 63 [2020-07-07 11:31:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:45,114 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-07-07 11:31:45,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:31:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-07-07 11:31:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-07 11:31:45,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:45,116 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:45,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-07-07 11:31:45,332 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1896448358, now seen corresponding path program 1 times [2020-07-07 11:31:45,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:45,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875690208] [2020-07-07 11:31:45,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:45,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875690208] [2020-07-07 11:31:45,427 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-07-07 11:31:45,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113641466] [2020-07-07 11:31:45,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:45,484 INFO L264 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-07 11:31:45,486 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-07-07 11:31:45,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:31:45,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-07 11:31:45,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307370412] [2020-07-07 11:31:45,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:31:45,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:45,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:31:45,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:31:45,498 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-07-07 11:31:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:45,525 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-07-07 11:31:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:31:45,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-07-07 11:31:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:45,527 INFO L225 Difference]: With dead ends: 78 [2020-07-07 11:31:45,527 INFO L226 Difference]: Without dead ends: 48 [2020-07-07 11:31:45,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:31:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-07 11:31:45,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-07 11:31:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-07 11:31:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-07-07 11:31:45,534 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 72 [2020-07-07 11:31:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:45,535 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-07-07 11:31:45,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:31:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-07-07 11:31:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-07 11:31:45,536 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:45,537 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:45,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:45,750 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:45,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2135261480, now seen corresponding path program 2 times [2020-07-07 11:31:45,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:45,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600927689] [2020-07-07 11:31:45,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:45,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600927689] [2020-07-07 11:31:45,922 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-07-07 11:31:45,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673465405] [2020-07-07 11:31:45,923 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:46,011 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:31:46,012 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:31:46,014 INFO L264 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:31:46,016 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-07-07 11:31:46,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:31:46,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-07 11:31:46,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085543884] [2020-07-07 11:31:46,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:31:46,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:46,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:31:46,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:31:46,029 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-07-07 11:31:46,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:46,063 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-07-07 11:31:46,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:31:46,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-07-07 11:31:46,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:46,065 INFO L225 Difference]: With dead ends: 79 [2020-07-07 11:31:46,065 INFO L226 Difference]: Without dead ends: 49 [2020-07-07 11:31:46,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:31:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-07 11:31:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-07-07 11:31:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-07 11:31:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-07-07 11:31:46,072 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 74 [2020-07-07 11:31:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:46,072 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-07-07 11:31:46,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:31:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-07-07 11:31:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-07 11:31:46,074 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:46,074 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:46,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:46,289 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:46,290 INFO L82 PathProgramCache]: Analyzing trace with hash -293562262, now seen corresponding path program 3 times [2020-07-07 11:31:46,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:46,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730004750] [2020-07-07 11:31:46,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:46,305 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:46,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814896608] [2020-07-07 11:31:46,306 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:46,427 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-07-07 11:31:46,428 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:31:46,429 INFO L264 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:31:46,431 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-07-07 11:31:46,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730004750] [2020-07-07 11:31:46,448 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:46,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814896608] [2020-07-07 11:31:46,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:31:46,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-07-07 11:31:46,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053830032] [2020-07-07 11:31:46,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:31:46,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:46,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:31:46,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:31:46,451 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 4 states. [2020-07-07 11:31:46,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:46,465 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-07-07 11:31:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:31:46,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-07-07 11:31:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:46,469 INFO L225 Difference]: With dead ends: 72 [2020-07-07 11:31:46,469 INFO L226 Difference]: Without dead ends: 52 [2020-07-07 11:31:46,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:31:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-07 11:31:46,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-07-07 11:31:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-07 11:31:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-07-07 11:31:46,476 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 76 [2020-07-07 11:31:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:46,477 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-07-07 11:31:46,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:31:46,477 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-07-07 11:31:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-07 11:31:46,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:46,478 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:46,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-07-07 11:31:46,687 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:46,688 INFO L82 PathProgramCache]: Analyzing trace with hash 704023820, now seen corresponding path program 4 times [2020-07-07 11:31:46,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:46,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87372473] [2020-07-07 11:31:46,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:46,707 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:46,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659437369] [2020-07-07 11:31:46,708 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:46,755 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:31:46,755 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:31:46,756 INFO L264 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:31:46,758 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-07 11:31:46,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87372473] [2020-07-07 11:31:46,784 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:46,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659437369] [2020-07-07 11:31:46,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:31:46,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-07-07 11:31:46,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064523288] [2020-07-07 11:31:46,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:31:46,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:46,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:31:46,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:31:46,786 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 5 states. [2020-07-07 11:31:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:46,811 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2020-07-07 11:31:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:31:46,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-07 11:31:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:46,812 INFO L225 Difference]: With dead ends: 82 [2020-07-07 11:31:46,812 INFO L226 Difference]: Without dead ends: 54 [2020-07-07 11:31:46,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:31:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-07 11:31:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-07-07 11:31:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-07 11:31:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-07-07 11:31:46,827 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 78 [2020-07-07 11:31:46,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:46,827 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-07-07 11:31:46,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:31:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-07-07 11:31:46,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-07 11:31:46,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:46,829 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:47,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:47,043 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:47,044 INFO L82 PathProgramCache]: Analyzing trace with hash -40278520, now seen corresponding path program 5 times [2020-07-07 11:31:47,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:47,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886967228] [2020-07-07 11:31:47,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:47,060 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:47,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596624297] [2020-07-07 11:31:47,061 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:47,107 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:31:47,108 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:31:47,108 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:31:47,110 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-07-07 11:31:47,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886967228] [2020-07-07 11:31:47,138 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:47,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596624297] [2020-07-07 11:31:47,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:31:47,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-07-07 11:31:47,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932645237] [2020-07-07 11:31:47,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:31:47,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:47,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:31:47,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:31:47,140 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-07-07 11:31:47,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:47,166 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-07-07 11:31:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:31:47,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-07-07 11:31:47,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:47,167 INFO L225 Difference]: With dead ends: 88 [2020-07-07 11:31:47,167 INFO L226 Difference]: Without dead ends: 57 [2020-07-07 11:31:47,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:31:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-07 11:31:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-07 11:31:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-07 11:31:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-07-07 11:31:47,175 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 87 [2020-07-07 11:31:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:47,176 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-07-07 11:31:47,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:31:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-07-07 11:31:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-07-07 11:31:47,177 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:47,177 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:47,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-07 11:31:47,393 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:47,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:47,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1679580114, now seen corresponding path program 6 times [2020-07-07 11:31:47,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:47,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477590385] [2020-07-07 11:31:47,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:47,407 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:47,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524805255] [2020-07-07 11:31:47,408 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:47,670 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-07-07 11:31:47,670 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:31:47,672 INFO L264 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:31:47,674 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:31:47,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477590385] [2020-07-07 11:31:47,714 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:47,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524805255] [2020-07-07 11:31:47,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:31:47,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-07-07 11:31:47,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539736949] [2020-07-07 11:31:47,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:31:47,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:47,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:31:47,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:31:47,716 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2020-07-07 11:31:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:47,742 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-07-07 11:31:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:31:47,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-07-07 11:31:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:47,744 INFO L225 Difference]: With dead ends: 86 [2020-07-07 11:31:47,744 INFO L226 Difference]: Without dead ends: 60 [2020-07-07 11:31:47,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:31:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-07 11:31:47,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-07-07 11:31:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-07 11:31:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-07-07 11:31:47,750 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 96 [2020-07-07 11:31:47,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:47,751 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-07-07 11:31:47,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:31:47,751 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-07-07 11:31:47,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-07 11:31:47,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:47,753 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:47,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:47,954 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:47,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2078244212, now seen corresponding path program 7 times [2020-07-07 11:31:47,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:47,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313343038] [2020-07-07 11:31:47,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:47,967 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:47,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706718716] [2020-07-07 11:31:47,967 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:48,033 INFO L264 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-07 11:31:48,035 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 180 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:31:48,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313343038] [2020-07-07 11:31:48,072 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:48,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706718716] [2020-07-07 11:31:48,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:31:48,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-07 11:31:48,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581643302] [2020-07-07 11:31:48,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:31:48,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:48,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:31:48,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:31:48,077 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-07-07 11:31:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:48,103 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-07-07 11:31:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:31:48,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-07-07 11:31:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:48,105 INFO L225 Difference]: With dead ends: 87 [2020-07-07 11:31:48,105 INFO L226 Difference]: Without dead ends: 61 [2020-07-07 11:31:48,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:31:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-07 11:31:48,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-07 11:31:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-07 11:31:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-07-07 11:31:48,121 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 98 [2020-07-07 11:31:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:48,122 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-07-07 11:31:48,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:31:48,122 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-07-07 11:31:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-07 11:31:48,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:48,123 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:31:48,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-07-07 11:31:48,324 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:48,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:48,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1352614250, now seen corresponding path program 8 times [2020-07-07 11:31:48,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:48,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483851337] [2020-07-07 11:31:48,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:48,336 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:48,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865389436] [2020-07-07 11:31:48,337 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:48,700 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:31:48,700 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-07 11:31:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:31:48,855 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:31:48,858 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:31:49,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-07-07 11:31:49,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:31:49 BoogieIcfgContainer [2020-07-07 11:31:49,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:31:49,147 INFO L168 Benchmark]: Toolchain (without parser) took 8908.83 ms. Allocated memory was 136.3 MB in the beginning and 285.7 MB in the end (delta: 149.4 MB). Free memory was 101.4 MB in the beginning and 163.4 MB in the end (delta: -62.0 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:49,147 INFO L168 Benchmark]: CDTParser took 1.48 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:31:49,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.17 ms. Allocated memory is still 136.3 MB. Free memory was 101.0 MB in the beginning and 90.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:49,149 INFO L168 Benchmark]: Boogie Preprocessor took 115.94 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 90.6 MB in the beginning and 176.6 MB in the end (delta: -85.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:49,149 INFO L168 Benchmark]: RCFGBuilder took 489.44 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 158.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:49,150 INFO L168 Benchmark]: TraceAbstraction took 8018.24 ms. Allocated memory was 199.2 MB in the beginning and 285.7 MB in the end (delta: 86.5 MB). Free memory was 158.6 MB in the beginning and 163.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:49,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.48 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.17 ms. Allocated memory is still 136.3 MB. Free memory was 101.0 MB in the beginning and 90.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.94 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 90.6 MB in the beginning and 176.6 MB in the end (delta: -85.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.44 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 158.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8018.24 ms. Allocated memory was 199.2 MB in the beginning and 285.7 MB in the end (delta: 86.5 MB). Free memory was 158.6 MB in the beginning and 163.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; VAL [x={2:0}] [L32] CALL init_nondet(x) VAL [x={2:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=1, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=2, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=3, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=4, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=5, x={2:0}, x={2:0}] [L6] COND FALSE !(i < 5) VAL [i=5, x={2:0}, x={2:0}] [L32] RET init_nondet(x) VAL [x={2:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={2:0}] [L38] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=2147483647, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=2147483647, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=2147483647, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=5, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=5, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=5, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=2, cnt=2, i=5, ret=5, x={2:0}, x={2:0}] [L38] RET, EXPR rangesum(x) VAL [rangesum(x)=2, x={2:0}] [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp VAL [ret=2, temp=-2147483648, x={2:0}] [L41] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=2147483647, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=2147483647, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=2147483647, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=5, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=5, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=5, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=2, cnt=2, i=5, ret=5, x={2:0}, x={2:0}] [L41] RET, EXPR rangesum(x) VAL [rangesum(x)=2, ret=2, temp=-2147483648, x={2:0}] [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=2, ret2=2, temp=2147483645, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=1, ret=2, ret2=2, temp=2147483645, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=2, ret=2, ret2=2, temp=2147483645, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=3, ret=2, ret2=2, temp=2147483645, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=4, ret=2, ret2=2, temp=2147483645, x={2:0}] [L43] COND FALSE !(i<5 -1) VAL [i=4, ret=2, ret2=2, temp=2147483645, x={2:0}] [L46] x[5 -1] = temp VAL [i=4, ret=2, ret2=2, temp=2147483645, x={2:0}] [L47] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2147483642, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2147483642, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2147483642, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=3, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=3, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=3, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=1, cnt=2, i=5, ret=3, x={2:0}, x={2:0}] [L47] RET, EXPR rangesum(x) VAL [i=4, rangesum(x)=1, ret=2, ret2=2, temp=2147483645, x={2:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=4, ret=2, ret2=2, ret5=1, temp=2147483645, x={2:0}] [L50] __VERIFIER_error() VAL [i=4, ret=2, ret2=2, ret5=1, temp=2147483645, x={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.8s, OverallIterations: 16, TraceHistogramMax: 15, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 532 SDtfs, 111 SDslu, 933 SDs, 0 SdLazy, 303 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1039 GetRequests, 974 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 16 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1423 NumberOfCodeBlocks, 1252 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1122 ConstructedInterpolants, 0 QuantifiedInterpolants, 89157 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2541 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 2223/2300 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 incorrect! Received shutdown request...