/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:54:06,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:54:06,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:54:06,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:54:06,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:54:06,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:54:06,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:54:06,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:54:06,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:54:06,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:54:06,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:54:06,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:54:06,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:54:06,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:54:06,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:54:06,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:54:06,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:54:06,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:54:06,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:54:06,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:54:06,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:54:06,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:54:06,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:54:06,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:54:06,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:54:06,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:54:06,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:54:06,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:54:06,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:54:06,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:54:06,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:54:06,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:54:06,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:54:06,523 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:54:06,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:54:06,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:54:06,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:54:06,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:54:06,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:54:06,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:54:06,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:54:06,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:54:06,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:54:06,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:54:06,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:54:06,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:54:06,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:54:06,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:54:06,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:54:06,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:54:06,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:54:06,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:54:06,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:54:06,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:54:06,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:54:06,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:54:06,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:54:06,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:54:06,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:54:06,977 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:54:06,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-23 07:54:07,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d278c866d/3f7932451a834f83b222f9f42a16aab0/FLAGefddf3dff [2020-12-23 07:54:07,819 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:54:07,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-23 07:54:07,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d278c866d/3f7932451a834f83b222f9f42a16aab0/FLAGefddf3dff [2020-12-23 07:54:08,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d278c866d/3f7932451a834f83b222f9f42a16aab0 [2020-12-23 07:54:08,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:54:08,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:54:08,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:08,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:54:08,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:54:08,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13421d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08, skipping insertion in model container [2020-12-23 07:54:08,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:54:08,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:54:08,364 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:54:08,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:08,401 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:54:08,418 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:54:08,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:08,451 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:54:08,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08 WrapperNode [2020-12-23 07:54:08,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:08,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:08,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:54:08,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:54:08,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:08,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:54:08,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:54:08,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:54:08,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:54:08,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:54:08,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:54:08,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:54:08,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:54:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:54:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:54:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:54:09,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:54:09,227 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-23 07:54:09,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:09 BoogieIcfgContainer [2020-12-23 07:54:09,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:54:09,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:54:09,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:54:09,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:54:09,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:54:08" (1/3) ... [2020-12-23 07:54:09,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780f6755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:09, skipping insertion in model container [2020-12-23 07:54:09,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (2/3) ... [2020-12-23 07:54:09,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780f6755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:09, skipping insertion in model container [2020-12-23 07:54:09,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:09" (3/3) ... [2020-12-23 07:54:09,247 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound100.c [2020-12-23 07:54:09,255 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:54:09,260 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:54:09,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:54:09,345 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:54:09,345 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:54:09,345 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:54:09,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:54:09,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:54:09,346 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:54:09,346 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:54:09,346 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:54:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:54:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:54:09,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:09,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:09,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:09,398 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-23 07:54:09,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:09,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878242279] [2020-12-23 07:54:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:09,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878242279] [2020-12-23 07:54:09,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:09,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:54:09,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167445258] [2020-12-23 07:54:09,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:54:09,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:09,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:54:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:54:09,658 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:54:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:09,684 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-23 07:54:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:54:09,685 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 07:54:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:09,697 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:54:09,697 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:54:09,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:54:09,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:54:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:54:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:54:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:54:09,753 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-23 07:54:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:09,754 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:54:09,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:54:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:54:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:54:09,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:09,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:09,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:54:09,761 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:09,765 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-23 07:54:09,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:09,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101604290] [2020-12-23 07:54:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:09,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101604290] [2020-12-23 07:54:09,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:09,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:09,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230505105] [2020-12-23 07:54:09,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:09,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:09,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:09,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:09,948 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:54:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:10,073 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-23 07:54:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:10,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:54:10,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:10,076 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:54:10,076 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:54:10,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:54:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-23 07:54:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:54:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:54:10,087 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-23 07:54:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:10,087 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:54:10,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:54:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:54:10,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:10,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:10,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:54:10,089 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:10,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:10,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-23 07:54:10,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948781853] [2020-12-23 07:54:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948781853] [2020-12-23 07:54:10,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:10,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:54:10,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354062733] [2020-12-23 07:54:10,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:10,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:10,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:10,140 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-23 07:54:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:10,189 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-23 07:54:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:54:10,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:54:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:10,194 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:54:10,195 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:54:10,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:54:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:54:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:54:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:54:10,218 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-23 07:54:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:10,218 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:54:10,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:54:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:54:10,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:10,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:10,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:54:10,223 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:10,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-23 07:54:10,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820710109] [2020-12-23 07:54:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820710109] [2020-12-23 07:54:10,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:10,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:10,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193075331] [2020-12-23 07:54:10,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:10,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:10,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:10,332 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:54:10,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:10,459 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-23 07:54:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:10,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:54:10,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:10,461 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:54:10,461 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:54:10,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:54:10,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:54:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:54:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:54:10,470 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-23 07:54:10,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:10,471 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:54:10,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:54:10,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:54:10,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:10,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:10,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 07:54:10,473 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:10,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:10,473 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-23 07:54:10,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727260813] [2020-12-23 07:54:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,495 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:10,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835409218] [2020-12-23 07:54:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:10,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:54:10,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727260813] [2020-12-23 07:54:10,775 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:10,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835409218] [2020-12-23 07:54:10,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:10,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:54:10,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064969400] [2020-12-23 07:54:10,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:54:10,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:54:10,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:10,779 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-23 07:54:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:11,203 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-23 07:54:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:54:11,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:54:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:11,206 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:54:11,206 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 07:54:11,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:54:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 07:54:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-23 07:54:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:54:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-23 07:54:11,217 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-23 07:54:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:11,218 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-23 07:54:11,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:11,218 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-23 07:54:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:54:11,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:11,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:11,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:11,433 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:11,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-23 07:54:11,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:11,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757572849] [2020-12-23 07:54:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:11,464 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:11,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060489086] [2020-12-23 07:54:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:11,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:54:11,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:11,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757572849] [2020-12-23 07:54:11,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:11,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060489086] [2020-12-23 07:54:11,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:11,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:54:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46911348] [2020-12-23 07:54:11,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:54:11,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:11,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:54:11,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:11,774 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-23 07:54:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:12,252 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-23 07:54:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:54:12,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 07:54:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:12,254 INFO L225 Difference]: With dead ends: 53 [2020-12-23 07:54:12,255 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:54:12,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:54:12,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:54:12,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 07:54:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:54:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-23 07:54:12,262 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-23 07:54:12,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:12,263 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-23 07:54:12,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-23 07:54:12,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:54:12,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:12,264 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:12,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:12,478 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:12,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:12,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-23 07:54:12,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:12,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106654526] [2020-12-23 07:54:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:12,497 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:12,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837549609] [2020-12-23 07:54:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:54:12,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:12,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106654526] [2020-12-23 07:54:12,609 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:12,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837549609] [2020-12-23 07:54:12,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:12,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:54:12,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546166957] [2020-12-23 07:54:12,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:54:12,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:12,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:54:12,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:12,612 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-23 07:54:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:12,644 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-23 07:54:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:54:12,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:54:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:12,645 INFO L225 Difference]: With dead ends: 62 [2020-12-23 07:54:12,646 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 07:54:12,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 07:54:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-23 07:54:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 07:54:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-23 07:54:12,653 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-23 07:54:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:12,654 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-23 07:54:12,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:54:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-23 07:54:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:54:12,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:12,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:12,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:12,870 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-23 07:54:12,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:12,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935286777] [2020-12-23 07:54:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:12,890 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:12,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887114864] [2020-12-23 07:54:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:13,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:54:13,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:13,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935286777] [2020-12-23 07:54:13,208 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:13,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887114864] [2020-12-23 07:54:13,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:13,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:54:13,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991528472] [2020-12-23 07:54:13,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:54:13,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:13,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:54:13,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:54:13,211 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-12-23 07:54:13,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:13,788 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-23 07:54:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:54:13,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-23 07:54:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:13,790 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:54:13,791 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 07:54:13,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:54:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 07:54:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-12-23 07:54:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 07:54:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-23 07:54:13,801 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-23 07:54:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:13,801 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-23 07:54:13,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:54:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-23 07:54:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:54:13,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:13,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:14,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:14,012 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:14,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-23 07:54:14,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:14,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124723280] [2020-12-23 07:54:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:14,036 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:14,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094651819] [2020-12-23 07:54:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:14,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:54:14,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:14,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124723280] [2020-12-23 07:54:14,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:14,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094651819] [2020-12-23 07:54:14,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:14,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:54:14,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906231695] [2020-12-23 07:54:14,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:54:14,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:14,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:54:14,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:14,321 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2020-12-23 07:54:16,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:16,725 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-12-23 07:54:16,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:54:16,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-23 07:54:16,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:16,727 INFO L225 Difference]: With dead ends: 74 [2020-12-23 07:54:16,727 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 07:54:16,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:54:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 07:54:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-12-23 07:54:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:54:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-23 07:54:16,737 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2020-12-23 07:54:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:16,737 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-23 07:54:16,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-23 07:54:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:54:16,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:16,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:16,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:16,955 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:16,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:16,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-23 07:54:16,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:16,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071197257] [2020-12-23 07:54:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:16,969 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:16,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814510554] [2020-12-23 07:54:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:17,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:54:17,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:17,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071197257] [2020-12-23 07:54:17,135 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:17,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814510554] [2020-12-23 07:54:17,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:17,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:54:17,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540754561] [2020-12-23 07:54:17,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:54:17,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:17,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:54:17,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:17,145 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2020-12-23 07:54:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:17,175 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-23 07:54:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:54:17,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:54:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:17,177 INFO L225 Difference]: With dead ends: 71 [2020-12-23 07:54:17,177 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 07:54:17,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 07:54:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-23 07:54:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:54:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2020-12-23 07:54:17,201 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2020-12-23 07:54:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:17,204 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2020-12-23 07:54:17,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2020-12-23 07:54:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:54:17,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:17,211 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:17,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:17,425 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:17,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:17,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2020-12-23 07:54:17,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:17,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954915270] [2020-12-23 07:54:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:17,441 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:17,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598057533] [2020-12-23 07:54:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:17,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:54:17,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:17,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954915270] [2020-12-23 07:54:17,568 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:17,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598057533] [2020-12-23 07:54:17,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:17,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:54:17,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342560615] [2020-12-23 07:54:17,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:54:17,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:17,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:54:17,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:17,570 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2020-12-23 07:54:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:17,616 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-12-23 07:54:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:54:17,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-23 07:54:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:17,618 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:54:17,618 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:54:17,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:54:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:54:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 07:54:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:54:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-23 07:54:17,627 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2020-12-23 07:54:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:17,627 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-23 07:54:17,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-23 07:54:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:54:17,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:17,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:17,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:17,835 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:17,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-23 07:54:17,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:17,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964039105] [2020-12-23 07:54:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:17,864 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:17,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800811048] [2020-12-23 07:54:17,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:18,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:54:18,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:18,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:54:18,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:18,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964039105] [2020-12-23 07:54:18,602 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:18,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800811048] [2020-12-23 07:54:18,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:18,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:54:18,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222002831] [2020-12-23 07:54:18,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:54:18,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:18,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:54:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:54:18,610 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2020-12-23 07:54:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:19,718 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-23 07:54:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:54:19,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-23 07:54:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:19,720 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:54:19,720 INFO L226 Difference]: Without dead ends: 93 [2020-12-23 07:54:19,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:54:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-23 07:54:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-12-23 07:54:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:54:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-12-23 07:54:19,731 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2020-12-23 07:54:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:19,731 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-12-23 07:54:19,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:54:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-12-23 07:54:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:54:19,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:19,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:19,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:54:19,941 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:19,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-23 07:54:19,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:19,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160670689] [2020-12-23 07:54:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:19,955 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:19,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970006345] [2020-12-23 07:54:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:54:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:24,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:54:24,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:24,927 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:24,991 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:54:25,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:54:25,298 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:54:25,633 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:54:26,223 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:27,872 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:29,856 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:31,752 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:33,615 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:34,586 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:35,416 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:36,307 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:37,910 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:39,222 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:40,203 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:41,323 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:42,218 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:45,852 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:50,455 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:55,474 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:55:02,588 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:55:14,774 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:55:34,309 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:55:37,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160670689] [2020-12-23 07:55:37,309 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:37,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970006345] [2020-12-23 07:55:37,310 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-23 07:55:37,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:37,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:55:37,310 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:55:37,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:55:37,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:37,542 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:55:37,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:55:37 BoogieIcfgContainer [2020-12-23 07:55:37,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:55:37,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:55:37,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:55:37,543 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:55:37,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:09" (3/4) ... [2020-12-23 07:55:37,547 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:55:37,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:55:37,549 INFO L168 Benchmark]: Toolchain (without parser) took 89382.05 ms. Allocated memory was 163.6 MB in the beginning and 351.3 MB in the end (delta: 187.7 MB). Free memory was 138.7 MB in the beginning and 214.7 MB in the end (delta: -76.0 MB). Peak memory consumption was 112.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:37,550 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 163.6 MB. Free memory was 135.2 MB in the beginning and 135.1 MB in the end (delta: 88.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:37,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.23 ms. Allocated memory is still 163.6 MB. Free memory was 138.4 MB in the beginning and 127.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:37,551 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.91 ms. Allocated memory is still 163.6 MB. Free memory was 127.9 MB in the beginning and 126.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:37,551 INFO L168 Benchmark]: Boogie Preprocessor took 69.53 ms. Allocated memory is still 163.6 MB. Free memory was 126.3 MB in the beginning and 125.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:37,552 INFO L168 Benchmark]: RCFGBuilder took 623.16 ms. Allocated memory is still 163.6 MB. Free memory was 125.1 MB in the beginning and 144.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:37,553 INFO L168 Benchmark]: TraceAbstraction took 88307.96 ms. Allocated memory was 163.6 MB in the beginning and 351.3 MB in the end (delta: 187.7 MB). Free memory was 144.0 MB in the beginning and 215.2 MB in the end (delta: -71.2 MB). Peak memory consumption was 218.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:37,553 INFO L168 Benchmark]: Witness Printer took 4.42 ms. Allocated memory is still 351.3 MB. Free memory was 215.2 MB in the beginning and 214.7 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:37,557 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 163.6 MB. Free memory was 135.2 MB in the beginning and 135.1 MB in the end (delta: 88.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.23 ms. Allocated memory is still 163.6 MB. Free memory was 138.4 MB in the beginning and 127.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.91 ms. Allocated memory is still 163.6 MB. Free memory was 127.9 MB in the beginning and 126.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.53 ms. Allocated memory is still 163.6 MB. Free memory was 126.3 MB in the beginning and 125.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 623.16 ms. Allocated memory is still 163.6 MB. Free memory was 125.1 MB in the beginning and 144.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 88307.96 ms. Allocated memory was 163.6 MB in the beginning and 351.3 MB in the end (delta: 187.7 MB). Free memory was 144.0 MB in the beginning and 215.2 MB in the end (delta: -71.2 MB). Peak memory consumption was 218.2 MB. Max. memory is 8.0 GB. * Witness Printer took 4.42 ms. Allocated memory is still 351.3 MB. Free memory was 215.2 MB in the beginning and 214.7 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 88.1s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 632 SolverSat, 126 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=12, 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, 12 MinimizatonAttempts, 94 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 30603 SizeOfPredicates, 44 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/59 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...