/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/prod4br-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:02:40,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:02:40,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:02:40,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:02:40,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:02:40,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:02:40,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:02:40,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:02:40,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:02:40,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:02:40,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:02:40,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:02:40,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:02:40,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:02:40,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:02:40,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:02:40,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:02:40,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:02:40,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:02:40,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:02:40,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:02:40,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:02:40,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:02:40,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:02:40,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:02:40,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:02:40,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:02:40,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:02:40,364 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 08:02:40,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:02:40,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:02:40,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:02:40,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:02:40,420 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:02:40,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:02:40,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:02:40,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:02:40,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:02:40,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:02:40,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:02:40,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:02:40,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:02:40,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:02:40,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:02:40,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:02:40,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:02:40,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:02:40,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:02:40,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:02:40,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:02:40,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:02:40,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:02:40,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:02:40,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:02:40,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:02:40,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:02:40,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:02:40,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:02:40,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:02:40,904 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:02:40,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound50.c [2020-12-23 08:02:40,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/362e3d7af/2a2b9c4d1c7446698dee1f1f60fc2669/FLAG3c535bd00 [2020-12-23 08:02:41,686 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:02:41,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound50.c [2020-12-23 08:02:41,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/362e3d7af/2a2b9c4d1c7446698dee1f1f60fc2669/FLAG3c535bd00 [2020-12-23 08:02:42,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/362e3d7af/2a2b9c4d1c7446698dee1f1f60fc2669 [2020-12-23 08:02:42,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:02:42,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:02:42,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:02:42,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:02:42,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:02:42,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a247566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42, skipping insertion in model container [2020-12-23 08:02:42,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:02:42,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:02:42,231 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/prod4br-ll_valuebound50.c[524,537] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] 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[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] 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[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] 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[~q~0,] [2020-12-23 08:02:42,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:02:42,266 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:02:42,280 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/prod4br-ll_valuebound50.c[524,537] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] 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[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] 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[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] 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[~q~0,] [2020-12-23 08:02:42,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:02:42,319 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:02:42,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42 WrapperNode [2020-12-23 08:02:42,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:02:42,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:02:42,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:02:42,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:02:42,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:02:42,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:02:42,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:02:42,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:02:42,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (1/1) ... [2020-12-23 08:02:42,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:02:42,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:02:42,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:02:42,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:02:42,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (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 08:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:02:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:02:42,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:02:42,890 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 08:02:42,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:02:42 BoogieIcfgContainer [2020-12-23 08:02:42,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:02:42,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:02:42,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:02:42,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:02:42,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:02:42" (1/3) ... [2020-12-23 08:02:42,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f45b066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:02:42, skipping insertion in model container [2020-12-23 08:02:42,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:02:42" (2/3) ... [2020-12-23 08:02:42,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f45b066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:02:42, skipping insertion in model container [2020-12-23 08:02:42,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:02:42" (3/3) ... [2020-12-23 08:02:42,901 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound50.c [2020-12-23 08:02:42,908 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:02:42,914 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 08:02:42,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 08:02:42,967 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:02:42,967 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:02:42,968 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:02:42,968 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:02:42,968 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:02:42,968 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:02:42,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:02:42,968 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:02:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-23 08:02:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 08:02:42,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:02:42,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:02:42,991 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:02:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:02:42,998 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 08:02:43,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:02:43,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902045458] [2020-12-23 08:02:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:02:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:02:43,172 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 08:02:43,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902045458] [2020-12-23 08:02:43,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:02:43,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:02:43,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006658929] [2020-12-23 08:02:43,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:02:43,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:02:43,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:02:43,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:02:43,199 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-23 08:02:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:02:43,220 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2020-12-23 08:02:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:02:43,222 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 08:02:43,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:02:43,233 INFO L225 Difference]: With dead ends: 53 [2020-12-23 08:02:43,233 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 08:02:43,237 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 08:02:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 08:02:43,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-23 08:02:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 08:02:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-23 08:02:43,274 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2020-12-23 08:02:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:02:43,275 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-23 08:02:43,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:02:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-23 08:02:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 08:02:43,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:02:43,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:02:43,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:02:43,276 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:02:43,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:02:43,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 08:02:43,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:02:43,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033991927] [2020-12-23 08:02:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:02:43,304 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:02:43,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155982636] [2020-12-23 08:02:43,305 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 08:02:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:02:43,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 08:02:43,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:02:43,583 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 08:02:43,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033991927] [2020-12-23 08:02:43,584 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:02:43,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155982636] [2020-12-23 08:02:43,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:02:43,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 08:02:43,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395849781] [2020-12-23 08:02:43,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:02:43,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:02:43,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:02:43,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:02:43,589 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 6 states. [2020-12-23 08:02:43,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:02:43,838 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2020-12-23 08:02:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:02:43,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 08:02:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:02:43,840 INFO L225 Difference]: With dead ends: 41 [2020-12-23 08:02:43,841 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 08:02:43,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:02:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 08:02:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2020-12-23 08:02:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 08:02:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-23 08:02:43,850 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2020-12-23 08:02:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:02:43,851 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-23 08:02:43,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:02:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-23 08:02:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 08:02:43,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:02:43,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:02:44,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 08:02:44,067 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:02:44,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:02:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -937517175, now seen corresponding path program 1 times [2020-12-23 08:02:44,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:02:44,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083736596] [2020-12-23 08:02:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:02:44,090 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:02:44,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107415180] [2020-12-23 08:02:44,090 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 08:02:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:02:44,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 08:02:44,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:02:44,402 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:02:44,771 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-23 08:02:44,878 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:02:44,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 08:02:44,888 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 08:02:44,900 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 08:02:44,904 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 08:02:44,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 08:02:45,007 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 08:02:45,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083736596] [2020-12-23 08:02:45,008 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:02:45,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107415180] [2020-12-23 08:02:45,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:02:45,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-23 08:02:45,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393479225] [2020-12-23 08:02:45,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 08:02:45,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:02:45,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 08:02:45,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-23 08:02:45,025 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 13 states. [2020-12-23 08:02:45,432 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-12-23 08:02:45,699 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-12-23 08:02:45,879 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-12-23 08:02:46,077 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 24 [2020-12-23 08:02:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:02:47,332 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-12-23 08:02:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 08:02:47,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-12-23 08:02:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:02:47,334 INFO L225 Difference]: With dead ends: 39 [2020-12-23 08:02:47,334 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 08:02:47,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2020-12-23 08:02:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 08:02:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2020-12-23 08:02:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 08:02:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-12-23 08:02:47,341 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 14 [2020-12-23 08:02:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:02:47,341 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-12-23 08:02:47,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 08:02:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-23 08:02:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 08:02:47,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:02:47,342 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:02:47,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:02:47,557 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:02:47,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:02:47,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1003041614, now seen corresponding path program 1 times [2020-12-23 08:02:47,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:02:47,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007138239] [2020-12-23 08:02:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:02:47,586 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:02:47,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253029046] [2020-12-23 08:02:47,587 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 08:02:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:02:47,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 08:02:47,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:02:47,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:02:47,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 08:02:48,002 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:02:48,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 08:02:48,163 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 08:02:48,293 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 08:02:48,724 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 08:02:48,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007138239] [2020-12-23 08:02:48,725 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:02:48,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253029046] [2020-12-23 08:02:48,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:02:48,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 08:02:48,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562249499] [2020-12-23 08:02:48,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 08:02:48,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:02:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 08:02:48,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:02:48,727 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 9 states. [2020-12-23 08:02:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:02:49,312 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-12-23 08:02:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 08:02:49,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-23 08:02:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:02:49,321 INFO L225 Difference]: With dead ends: 47 [2020-12-23 08:02:49,322 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 08:02:49,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-12-23 08:02:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 08:02:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2020-12-23 08:02:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 08:02:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-12-23 08:02:49,335 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 15 [2020-12-23 08:02:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:02:49,335 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-12-23 08:02:49,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 08:02:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-12-23 08:02:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 08:02:49,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:02:49,336 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:02:49,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:02:49,538 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:02:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:02:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1032048289, now seen corresponding path program 1 times [2020-12-23 08:02:49,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:02:49,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621818463] [2020-12-23 08:02:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:02:49,567 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:02:49,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604393173] [2020-12-23 08:02:49,568 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 08:02:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:02:49,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 08:02:49,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:02:51,884 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 27 DAG size of output: 18 [2020-12-23 08:02:51,956 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 08:02:51,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621818463] [2020-12-23 08:02:51,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:02:51,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604393173] [2020-12-23 08:02:51,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:02:51,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:02:51,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268537655] [2020-12-23 08:02:51,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:02:51,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:02:51,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:02:51,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:02:51,959 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-12-23 08:02:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:02:58,678 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-12-23 08:02:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 08:02:58,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-12-23 08:02:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:02:58,680 INFO L225 Difference]: With dead ends: 49 [2020-12-23 08:02:58,680 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 08:02:58,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 08:02:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 08:02:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2020-12-23 08:02:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 08:02:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-12-23 08:02:58,689 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2020-12-23 08:02:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:02:58,689 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-12-23 08:02:58,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:02:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-12-23 08:02:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 08:02:58,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:02:58,690 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:02:58,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:02:58,901 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:02:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:02:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1931404169, now seen corresponding path program 1 times [2020-12-23 08:02:58,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:02:58,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645332552] [2020-12-23 08:02:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:02:58,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:02:58,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587552608] [2020-12-23 08:02:58,918 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 08:02:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:02:58,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 08:02:58,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:03,301 WARN L197 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2020-12-23 08:03:03,414 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 08:03:03,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645332552] [2020-12-23 08:03:03,415 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:03,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587552608] [2020-12-23 08:03:03,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:03:03,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:03:03,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866376050] [2020-12-23 08:03:03,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:03:03,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:03,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:03:03,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:03:03,417 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 8 states. [2020-12-23 08:03:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:04,356 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2020-12-23 08:03:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 08:03:04,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-23 08:03:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:04,358 INFO L225 Difference]: With dead ends: 63 [2020-12-23 08:03:04,358 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 08:03:04,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-23 08:03:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 08:03:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2020-12-23 08:03:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 08:03:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-12-23 08:03:04,368 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 17 [2020-12-23 08:03:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:04,368 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-12-23 08:03:04,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:03:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2020-12-23 08:03:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 08:03:04,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:04,369 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:04,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 08:03:04,584 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:04,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1931463751, now seen corresponding path program 1 times [2020-12-23 08:03:04,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:04,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745066469] [2020-12-23 08:03:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:04,619 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:04,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260920995] [2020-12-23 08:03:04,620 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 08:03:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:03:04,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 08:03:04,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:04,913 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 18 [2020-12-23 08:03:05,014 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 08:03:05,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745066469] [2020-12-23 08:03:05,015 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:05,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260920995] [2020-12-23 08:03:05,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:03:05,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:03:05,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466747911] [2020-12-23 08:03:05,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:03:05,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:05,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:03:05,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:03:05,019 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 8 states. [2020-12-23 08:03:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:05,379 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-12-23 08:03:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 08:03:05,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-23 08:03:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:05,381 INFO L225 Difference]: With dead ends: 55 [2020-12-23 08:03:05,381 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 08:03:05,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 08:03:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 08:03:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2020-12-23 08:03:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 08:03:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-12-23 08:03:05,390 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 17 [2020-12-23 08:03:05,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:05,390 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-12-23 08:03:05,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:03:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2020-12-23 08:03:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 08:03:05,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:05,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:05,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:03:05,605 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:05,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:05,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1530166964, now seen corresponding path program 1 times [2020-12-23 08:03:05,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:05,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488174872] [2020-12-23 08:03:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:05,621 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:05,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376353255] [2020-12-23 08:03:05,625 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 08:03:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:03:05,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 08:03:05,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:03:05,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488174872] [2020-12-23 08:03:05,855 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:05,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376353255] [2020-12-23 08:03:05,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:03:05,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 08:03:05,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143088930] [2020-12-23 08:03:05,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:03:05,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:05,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:03:05,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:03:05,857 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 8 states. [2020-12-23 08:03:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:06,216 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-12-23 08:03:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 08:03:06,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-23 08:03:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:06,218 INFO L225 Difference]: With dead ends: 71 [2020-12-23 08:03:06,218 INFO L226 Difference]: Without dead ends: 63 [2020-12-23 08:03:06,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-23 08:03:06,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-23 08:03:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50. [2020-12-23 08:03:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 08:03:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-12-23 08:03:06,230 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 18 [2020-12-23 08:03:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:06,230 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-12-23 08:03:06,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:03:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-12-23 08:03:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 08:03:06,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:06,231 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:06,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:03:06,444 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:06,445 INFO L82 PathProgramCache]: Analyzing trace with hash 191838595, now seen corresponding path program 2 times [2020-12-23 08:03:06,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:06,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132121336] [2020-12-23 08:03:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:06,476 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:06,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983779744] [2020-12-23 08:03:06,477 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 08:03:06,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:03:06,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:03:06,549 WARN L261 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-23 08:03:06,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:09,046 WARN L197 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 22 [2020-12-23 08:03:11,248 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0))) (and (<= 1 c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~a~0 (div c_ULTIMATE.start_main_~x~0 2)) (= .cse0 (+ (* (div (* c_ULTIMATE.start_main_~p~0 (- 1)) (- 4)) c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~q~0)) (<= c_ULTIMATE.start_main_~x~0 50) (<= 0 c_ULTIMATE.start_main_~x~0) (not (= c_ULTIMATE.start_main_~x~0 0)) (<= (mod c_ULTIMATE.start_main_~x~0 2) 0) (= c_ULTIMATE.start_main_~b~0 (div c_ULTIMATE.start_main_~y~0 2)) (= c_ULTIMATE.start_main_~q~0 0) (<= (mod c_ULTIMATE.start_main_~y~0 2) 0) (let ((.cse1 (= .cse0 (+ (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~b~0) c_ULTIMATE.start_main_~q~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)) (and .cse1 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)))) (= (mod (* c_ULTIMATE.start_main_~p~0 3) (- 4)) 0))) is different from false [2020-12-23 08:03:28,619 WARN L197 SmtUtils]: Spent 15.18 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 08:03:32,448 WARN L197 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2020-12-23 08:03:32,533 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 08:03:32,881 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 08:03:33,663 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 08:03:34,814 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 08:03:35,896 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 08:03:37,252 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 08:03:38,701 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 08:03:40,156 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 08:03:40,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132121336] [2020-12-23 08:03:40,481 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:40,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983779744] [2020-12-23 08:03:40,481 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-23 08:03:40,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:03:40,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 08:03:40,481 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 08:03:40,481 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 08:03:40,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 08:03:40,718 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 08:03:40,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:03:40 BoogieIcfgContainer [2020-12-23 08:03:40,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:03:40,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:03:40,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:03:40,720 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:03:40,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:02:42" (3/4) ... [2020-12-23 08:03:40,724 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 08:03:40,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:03:40,726 INFO L168 Benchmark]: Toolchain (without parser) took 58686.00 ms. Allocated memory was 163.6 MB in the beginning and 237.0 MB in the end (delta: 73.4 MB). Free memory was 138.3 MB in the beginning and 193.9 MB in the end (delta: -55.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2020-12-23 08:03:40,726 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 163.6 MB. Free memory is still 136.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:03:40,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.77 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 127.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 08:03:40,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.12 ms. Allocated memory is still 163.6 MB. Free memory was 127.7 MB in the beginning and 126.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:03:40,728 INFO L168 Benchmark]: Boogie Preprocessor took 28.48 ms. Allocated memory is still 163.6 MB. Free memory was 126.1 MB in the beginning and 124.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:03:40,729 INFO L168 Benchmark]: RCFGBuilder took 497.01 ms. Allocated memory is still 163.6 MB. Free memory was 124.9 MB in the beginning and 142.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 08:03:40,730 INFO L168 Benchmark]: TraceAbstraction took 57825.11 ms. Allocated memory was 163.6 MB in the beginning and 237.0 MB in the end (delta: 73.4 MB). Free memory was 141.9 MB in the beginning and 194.5 MB in the end (delta: -52.6 MB). Peak memory consumption was 146.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:03:40,731 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 237.0 MB. Free memory was 194.5 MB in the beginning and 193.9 MB in the end (delta: 541.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:03:40,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 163.6 MB. Free memory is still 136.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.77 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 127.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.12 ms. Allocated memory is still 163.6 MB. Free memory was 127.7 MB in the beginning and 126.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.48 ms. Allocated memory is still 163.6 MB. Free memory was 126.1 MB in the beginning and 124.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 497.01 ms. Allocated memory is still 163.6 MB. Free memory was 124.9 MB in the beginning and 142.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 57825.11 ms. Allocated memory was 163.6 MB in the beginning and 237.0 MB in the end (delta: 73.4 MB). Free memory was 141.9 MB in the beginning and 194.5 MB in the end (delta: -52.6 MB). Peak memory consumption was 146.1 MB. Max. memory is 8.0 GB. * Witness Printer took 4.85 ms. Allocated memory is still 237.0 MB. Free memory was 194.5 MB in the beginning and 193.9 MB in the end (delta: 541.8 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: 14]: 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: [L20] int x, y; [L21] long long a, b, p, q; [L23] x = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L25] y = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L29] a = x [L30] b = y [L31] p = 1 [L32] q = 0 [L34] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L37] COND FALSE !(!(a != 0 && b != 0)) [L40] COND TRUE a % 2 == 0 && b % 2 == 0 [L41] a = a / 2 [L42] b = b / 2 [L43] p = 4 * p [L34] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L37] COND FALSE !(!(a != 0 && b != 0)) [L40] COND TRUE a % 2 == 0 && b % 2 == 0 [L41] a = a / 2 [L42] b = b / 2 [L43] p = 4 * p [L34] COND TRUE 1 [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 57.7s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 641 SDslu, 317 SDs, 0 SdLazy, 664 SolverSat, 182 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 85 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 111 ConstructedInterpolants, 1 QuantifiedInterpolants, 18930 SizeOfPredicates, 74 NumberOfNonLiveVariables, 578 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 3/11 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...