/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-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:52:36,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:52:36,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:52:36,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:52:36,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:52:36,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:52:36,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:52:36,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:52:36,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:52:36,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:52:36,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:52:36,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:52:36,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:52:36,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:52:36,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:52:36,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:52:36,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:52:36,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:52:36,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:52:36,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:52:36,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:52:36,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:52:36,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:52:36,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:52:36,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:52:36,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:52:36,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:52:36,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:52:36,501 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 07:52:36,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:52:36,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:52:36,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:52:36,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:52:36,556 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:52:36,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:52:36,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:52:36,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:52:36,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:52:36,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:52:36,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:52:36,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:52:36,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:52:36,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:52:36,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:52:36,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:52:36,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:52:36,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:52:36,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:52:36,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:52:36,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:52:36,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:52:36,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:52:36,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:52:36,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:52:36,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:52:36,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:52:36,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:52:36,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:52:36,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:52:36,961 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:52:36,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c [2020-12-23 07:52:37,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6aa528d58/c4ad85c2ffae42f2b42565a3b2da84b2/FLAG48b3fee06 [2020-12-23 07:52:37,621 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:52:37,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c [2020-12-23 07:52:37,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6aa528d58/c4ad85c2ffae42f2b42565a3b2da84b2/FLAG48b3fee06 [2020-12-23 07:52:37,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6aa528d58/c4ad85c2ffae42f2b42565a3b2da84b2 [2020-12-23 07:52:38,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:52:38,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:52:38,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:52:38,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:52:38,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:52:38,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:52:37" (1/1) ... [2020-12-23 07:52:38,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7776dc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38, skipping insertion in model container [2020-12-23 07:52:38,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:52:37" (1/1) ... [2020-12-23 07:52:38,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:52:38,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:52:38,271 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-ll_valuebound20.c[538,551] 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 07:52:38,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:52:38,335 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:52:38,354 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-ll_valuebound20.c[538,551] 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 07:52:38,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:52:38,405 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:52:38,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38 WrapperNode [2020-12-23 07:52:38,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:52:38,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:52:38,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:52:38,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:52:38,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:52:38,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:52:38,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:52:38,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:52:38,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (1/1) ... [2020-12-23 07:52:38,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:52:38,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:52:38,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:52:38,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:52:38,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (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 07:52:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:52:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:52:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:52:38,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:52:39,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:52:39,179 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:52:39,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:39 BoogieIcfgContainer [2020-12-23 07:52:39,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:52:39,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:52:39,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:52:39,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:52:39,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:52:37" (1/3) ... [2020-12-23 07:52:39,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c53f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:52:39, skipping insertion in model container [2020-12-23 07:52:39,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:38" (2/3) ... [2020-12-23 07:52:39,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c53f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:52:39, skipping insertion in model container [2020-12-23 07:52:39,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:39" (3/3) ... [2020-12-23 07:52:39,191 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound20.c [2020-12-23 07:52:39,198 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:52:39,203 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:52:39,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:52:39,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:52:39,253 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:52:39,253 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:52:39,253 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:52:39,253 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:52:39,254 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:52:39,254 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:52:39,254 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:52:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:52:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:52:39,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:39,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:39,279 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 07:52:39,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:52:39,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:39,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564296547] [2020-12-23 07:52:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:39,462 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 07:52:39,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564296547] [2020-12-23 07:52:39,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:39,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:52:39,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673834608] [2020-12-23 07:52:39,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:52:39,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:39,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:52:39,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:52:39,489 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:52:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:39,512 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-23 07:52:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:52:39,514 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:52:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:39,524 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:52:39,525 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:52:39,528 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 07:52:39,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:52:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:52:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:52:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:52:39,570 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-23 07:52:39,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:39,571 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:52:39,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:52:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:52:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:52:39,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:39,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:39,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:52:39,573 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 07:52:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:39,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:52:39,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:39,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331197462] [2020-12-23 07:52:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:39,737 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 07:52:39,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331197462] [2020-12-23 07:52:39,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:39,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:52:39,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6258202] [2020-12-23 07:52:39,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:52:39,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:52:39,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:52:39,744 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-23 07:52:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:39,934 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-23 07:52:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:39,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:52:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:39,938 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:52:39,938 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:52:39,940 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 07:52:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:52:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-23 07:52:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:52:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:52:39,949 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-23 07:52:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:39,950 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:52:39,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:52:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:52:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:52:39,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:39,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:39,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:52:39,951 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 07:52:39,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:39,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-23 07:52:39,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:39,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25690667] [2020-12-23 07:52:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:40,022 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 07:52:40,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25690667] [2020-12-23 07:52:40,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:40,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:52:40,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277740780] [2020-12-23 07:52:40,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:52:40,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:40,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:52:40,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:52:40,026 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-23 07:52:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:40,100 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-23 07:52:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:40,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 07:52:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:40,102 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:52:40,102 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:52:40,102 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 07:52:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:52:40,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:52:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:52:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:52:40,122 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-23 07:52:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:40,123 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:52:40,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:52:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:52:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:52:40,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:40,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:40,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:52:40,127 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 07:52:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-23 07:52:40,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:40,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493963490] [2020-12-23 07:52:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:40,163 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:40,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212512593] [2020-12-23 07:52:40,164 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 07:52:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:40,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:52:40,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:40,355 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 07:52:40,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493963490] [2020-12-23 07:52:40,358 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:40,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212512593] [2020-12-23 07:52:40,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:40,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:52:40,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774372509] [2020-12-23 07:52:40,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:52:40,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:40,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:52:40,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:52:40,365 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2020-12-23 07:52:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:40,531 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 07:52:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:40,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:52:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:40,533 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:52:40,533 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:52:40,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:52:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:52:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-23 07:52:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:52:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-23 07:52:40,547 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-23 07:52:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:40,547 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-23 07:52:40,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:52:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-23 07:52:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:52:40,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:40,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:40,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:40,764 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 07:52:40,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:40,765 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-23 07:52:40,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:40,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56790283] [2020-12-23 07:52:40,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:40,783 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:40,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433822072] [2020-12-23 07:52:40,784 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 07:52:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:40,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:52:40,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:41,086 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 07:52:41,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56790283] [2020-12-23 07:52:41,089 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:41,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433822072] [2020-12-23 07:52:41,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:41,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 07:52:41,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035362703] [2020-12-23 07:52:41,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:41,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:41,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:41,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:41,093 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2020-12-23 07:52:41,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:41,379 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-23 07:52:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:52:41,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-23 07:52:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:41,384 INFO L225 Difference]: With dead ends: 67 [2020-12-23 07:52:41,384 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:52:41,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:52:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:52:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-23 07:52:41,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:52:41,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-23 07:52:41,412 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-23 07:52:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:41,414 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-23 07:52:41,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:52:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-23 07:52:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:52:41,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:41,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:41,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:41,616 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 07:52:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:41,618 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-23 07:52:41,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:41,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033994801] [2020-12-23 07:52:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:41,646 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:41,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012179721] [2020-12-23 07:52:41,647 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 07:52:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:41,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:52:41,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:41,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033994801] [2020-12-23 07:52:41,876 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:41,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012179721] [2020-12-23 07:52:41,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:41,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:52:41,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921514640] [2020-12-23 07:52:41,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:41,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:41,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:41,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:41,879 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 9 states. [2020-12-23 07:52:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:42,327 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2020-12-23 07:52:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:52:42,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 07:52:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:42,329 INFO L225 Difference]: With dead ends: 102 [2020-12-23 07:52:42,329 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 07:52:42,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:52:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 07:52:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-12-23 07:52:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:52:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-12-23 07:52:42,364 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 22 [2020-12-23 07:52:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:42,364 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-12-23 07:52:42,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:52:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-12-23 07:52:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:52:42,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:42,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:42,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:42,580 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 07:52:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-23 07:52:42,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:42,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99308009] [2020-12-23 07:52:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:42,596 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:42,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50038674] [2020-12-23 07:52:42,597 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 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 07:52:42,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:52:42,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:42,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:52:42,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:43,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99308009] [2020-12-23 07:52:43,100 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:43,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50038674] [2020-12-23 07:52:43,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:43,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:52:43,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962896274] [2020-12-23 07:52:43,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:52:43,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:52:43,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:52:43,102 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 12 states. [2020-12-23 07:52:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:44,098 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-12-23 07:52:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:52:44,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-12-23 07:52:44,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:44,102 INFO L225 Difference]: With dead ends: 127 [2020-12-23 07:52:44,102 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:52:44,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:52:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:52:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-12-23 07:52:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:52:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-12-23 07:52:44,138 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 29 [2020-12-23 07:52:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:44,138 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-12-23 07:52:44,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:52:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-12-23 07:52:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:52:44,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:44,141 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, 1, 1, 1, 1] [2020-12-23 07:52:44,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:44,343 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 07:52:44,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:44,344 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-23 07:52:44,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:44,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619779226] [2020-12-23 07:52:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:44,357 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:44,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861127480] [2020-12-23 07:52:44,358 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 07:52:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:44,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:52:44,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:44,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619779226] [2020-12-23 07:52:44,860 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:44,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861127480] [2020-12-23 07:52:44,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:44,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:52:44,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439088517] [2020-12-23 07:52:44,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:52:44,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:44,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:52:44,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:52:44,863 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 10 states. [2020-12-23 07:52:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:45,569 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions. [2020-12-23 07:52:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:52:45,570 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:52:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:45,571 INFO L225 Difference]: With dead ends: 125 [2020-12-23 07:52:45,571 INFO L226 Difference]: Without dead ends: 123 [2020-12-23 07:52:45,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:52:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-23 07:52:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-12-23 07:52:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 07:52:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2020-12-23 07:52:45,589 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 31 [2020-12-23 07:52:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:45,589 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2020-12-23 07:52:45,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:52:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2020-12-23 07:52:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:52:45,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:45,591 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, 1, 1] [2020-12-23 07:52:45,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:45,806 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 07:52:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:45,807 INFO L82 PathProgramCache]: Analyzing trace with hash -684568005, now seen corresponding path program 1 times [2020-12-23 07:52:45,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:45,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781816632] [2020-12-23 07:52:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:45,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:45,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416432649] [2020-12-23 07:52:45,827 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 07:52:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:45,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:52:45,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:46,116 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:52:46,140 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:46,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:52:46,154 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:46,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781816632] [2020-12-23 07:52:46,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:46,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416432649] [2020-12-23 07:52:46,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:46,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:52:46,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899333593] [2020-12-23 07:52:46,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:52:46,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:46,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:52:46,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:52:46,466 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 12 states. [2020-12-23 07:52:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:47,645 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2020-12-23 07:52:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:52:47,646 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-12-23 07:52:47,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:47,647 INFO L225 Difference]: With dead ends: 131 [2020-12-23 07:52:47,647 INFO L226 Difference]: Without dead ends: 94 [2020-12-23 07:52:47,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:52:47,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-23 07:52:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-12-23 07:52:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:52:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2020-12-23 07:52:47,676 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 33 [2020-12-23 07:52:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:47,676 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2020-12-23 07:52:47,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:52:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2020-12-23 07:52:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:52:47,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:47,677 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:47,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:47,890 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 07:52:47,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:47,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1277177884, now seen corresponding path program 3 times [2020-12-23 07:52:47,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:47,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52420489] [2020-12-23 07:52:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:47,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:47,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211113157] [2020-12-23 07:52:47,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 07:52:47,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:52:47,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:47,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:52:47,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 07:52:56,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52420489] [2020-12-23 07:52:56,939 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:56,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211113157] [2020-12-23 07:52:56,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:56,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:52:56,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067821714] [2020-12-23 07:52:56,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:56,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:56,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:56,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=47, Unknown=4, NotChecked=0, Total=72 [2020-12-23 07:52:56,941 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand 9 states. [2020-12-23 07:53:57,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:57,313 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2020-12-23 07:53:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:53:57,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-12-23 07:53:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:57,315 INFO L225 Difference]: With dead ends: 108 [2020-12-23 07:53:57,315 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 07:53:57,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=40, Invalid=81, Unknown=11, NotChecked=0, Total=132 [2020-12-23 07:53:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 07:53:57,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-12-23 07:53:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:53:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-12-23 07:53:57,328 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 36 [2020-12-23 07:53:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:57,328 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-12-23 07:53:57,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:53:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-12-23 07:53:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:53:57,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:57,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:57,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:53:57,544 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 07:53:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash -642892963, now seen corresponding path program 2 times [2020-12-23 07:53:57,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:57,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832295530] [2020-12-23 07:53:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:57,571 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:57,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474172867] [2020-12-23 07:53:57,571 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 07:53:57,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:53:57,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:57,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 07:53:57,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:58,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832295530] [2020-12-23 07:53:58,047 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:58,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474172867] [2020-12-23 07:53:58,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:58,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:53:58,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680246491] [2020-12-23 07:53:58,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:53:58,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:58,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:53:58,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:53:58,050 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 11 states. [2020-12-23 07:53:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:58,954 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-12-23 07:53:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:53:58,955 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-12-23 07:53:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:58,956 INFO L225 Difference]: With dead ends: 147 [2020-12-23 07:53:58,957 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 07:53:58,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:53:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 07:53:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2020-12-23 07:53:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-23 07:53:58,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2020-12-23 07:53:58,970 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 38 [2020-12-23 07:53:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:58,971 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2020-12-23 07:53:58,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:53:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2020-12-23 07:53:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:53:58,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:58,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:59,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 07:53:59,174 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 07:53:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:59,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1707275894, now seen corresponding path program 3 times [2020-12-23 07:53:59,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:59,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832995821] [2020-12-23 07:53:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:59,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:59,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410024986] [2020-12-23 07:53:59,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 07:53:59,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:53:59,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:59,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 07:53:59,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:00,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832995821] [2020-12-23 07:54:00,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:00,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410024986] [2020-12-23 07:54:00,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:00,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:54:00,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768193733] [2020-12-23 07:54:00,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:54:00,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:54:00,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:54:00,066 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand 15 states. [2020-12-23 07:54:01,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:01,748 INFO L93 Difference]: Finished difference Result 146 states and 168 transitions. [2020-12-23 07:54:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:54:01,749 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-12-23 07:54:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:01,750 INFO L225 Difference]: With dead ends: 146 [2020-12-23 07:54:01,751 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 07:54:01,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-12-23 07:54:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 07:54:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2020-12-23 07:54:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-23 07:54:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2020-12-23 07:54:01,763 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 44 [2020-12-23 07:54:01,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:01,763 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2020-12-23 07:54:01,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:54:01,763 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2020-12-23 07:54:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:54:01,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:01,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:01,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:01,974 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 07:54:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2100302904, now seen corresponding path program 1 times [2020-12-23 07:54:01,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:01,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228517013] [2020-12-23 07:54:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:01,988 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:01,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552592224] [2020-12-23 07:54:01,988 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:02,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:54:02,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:02,119 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:54:02,122 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:54:02,126 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:54:02,133 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:54:02,137 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:54:02,142 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:54:02,166 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 07:54:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 07:54:02,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228517013] [2020-12-23 07:54:02,226 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:02,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552592224] [2020-12-23 07:54:02,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:02,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:54:02,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706653673] [2020-12-23 07:54:02,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:54:02,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:02,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:54:02,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:02,232 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand 5 states. [2020-12-23 07:54:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:02,315 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2020-12-23 07:54:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:02,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-23 07:54:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:02,317 INFO L225 Difference]: With dead ends: 130 [2020-12-23 07:54:02,317 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 07:54:02,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 07:54:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 07:54:02,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-12-23 07:54:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 07:54:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-12-23 07:54:02,329 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 44 [2020-12-23 07:54:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:02,329 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-12-23 07:54:02,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:54:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-12-23 07:54:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:54:02,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:02,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:02,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:02,545 INFO L429 AbstractCegarLoop]: === Iteration 14 === [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 07:54:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:02,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1027491960, now seen corresponding path program 4 times [2020-12-23 07:54:02,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:02,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84897804] [2020-12-23 07:54:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:02,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:02,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684490776] [2020-12-23 07:54:02,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:02,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:54:02,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:02,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-23 07:54:02,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:03,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84897804] [2020-12-23 07:54:03,474 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:03,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684490776] [2020-12-23 07:54:03,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:03,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:54:03,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266705560] [2020-12-23 07:54:03,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:54:03,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:54:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:54:03,477 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 15 states. [2020-12-23 07:54:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:05,226 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2020-12-23 07:54:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 07:54:05,227 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-12-23 07:54:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:05,228 INFO L225 Difference]: With dead ends: 126 [2020-12-23 07:54:05,228 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 07:54:05,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2020-12-23 07:54:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 07:54:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2020-12-23 07:54:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:54:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-12-23 07:54:05,241 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 45 [2020-12-23 07:54:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:05,242 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-12-23 07:54:05,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:54:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-12-23 07:54:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:54:05,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:05,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:05,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:54:05,460 INFO L429 AbstractCegarLoop]: === Iteration 15 === [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 07:54:05,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:05,461 INFO L82 PathProgramCache]: Analyzing trace with hash -14469331, now seen corresponding path program 2 times [2020-12-23 07:54:05,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:05,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780066336] [2020-12-23 07:54:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:05,472 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:05,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238279006] [2020-12-23 07:54:05,472 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:05,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:54:05,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:05,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 07:54:05,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:06,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780066336] [2020-12-23 07:54:06,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:06,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238279006] [2020-12-23 07:54:06,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:06,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:54:06,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116757873] [2020-12-23 07:54:06,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:54:06,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:06,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:54:06,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:54:06,162 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 16 states. [2020-12-23 07:54:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:07,615 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2020-12-23 07:54:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 07:54:07,616 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-12-23 07:54:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:07,617 INFO L225 Difference]: With dead ends: 126 [2020-12-23 07:54:07,617 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:54:07,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2020-12-23 07:54:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:54:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-23 07:54:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:54:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-12-23 07:54:07,635 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 46 [2020-12-23 07:54:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:07,639 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-12-23 07:54:07,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:54:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-12-23 07:54:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 07:54:07,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:07,642 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:07,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:54:07,855 INFO L429 AbstractCegarLoop]: === Iteration 16 === [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 07:54:07,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:07,856 INFO L82 PathProgramCache]: Analyzing trace with hash -422546789, now seen corresponding path program 3 times [2020-12-23 07:54:07,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:07,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614516604] [2020-12-23 07:54:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:07,904 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:07,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469874248] [2020-12-23 07:54:07,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:08,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:54:08,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:08,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 07:54:08,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:53,172 WARN L197 SmtUtils]: Spent 32.63 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-23 07:55:03,664 WARN L197 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 24 [2020-12-23 07:55:11,969 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-12-23 07:55:11,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614516604] [2020-12-23 07:55:11,989 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:11,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469874248] [2020-12-23 07:55:11,989 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:55:11,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:11,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:55:11,990 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:55:11,990 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:55:12,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:55:12,226 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:55:12,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:55:12 BoogieIcfgContainer [2020-12-23 07:55:12,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:55:12,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:55:12,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:55:12,227 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:55:12,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:39" (3/4) ... [2020-12-23 07:55:12,232 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:55:12,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:55:12,233 INFO L168 Benchmark]: Toolchain (without parser) took 154230.14 ms. Allocated memory was 154.1 MB in the beginning and 245.4 MB in the end (delta: 91.2 MB). Free memory was 130.3 MB in the beginning and 160.7 MB in the end (delta: -30.4 MB). Peak memory consumption was 61.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,234 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 154.1 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:12,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.44 ms. Allocated memory is still 154.1 MB. Free memory was 130.1 MB in the beginning and 120.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.81 ms. Allocated memory is still 154.1 MB. Free memory was 120.0 MB in the beginning and 118.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,235 INFO L168 Benchmark]: Boogie Preprocessor took 63.18 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 117.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,236 INFO L168 Benchmark]: RCFGBuilder took 619.29 ms. Allocated memory is still 154.1 MB. Free memory was 117.2 MB in the beginning and 132.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,236 INFO L168 Benchmark]: TraceAbstraction took 153043.96 ms. Allocated memory was 154.1 MB in the beginning and 245.4 MB in the end (delta: 91.2 MB). Free memory was 132.4 MB in the beginning and 161.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 62.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,237 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 245.4 MB. Free memory was 161.2 MB in the beginning and 160.7 MB in the end (delta: 519.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:12,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 154.1 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 400.44 ms. Allocated memory is still 154.1 MB. Free memory was 130.1 MB in the beginning and 120.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 78.81 ms. Allocated memory is still 154.1 MB. Free memory was 120.0 MB in the beginning and 118.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.18 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 117.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 619.29 ms. Allocated memory is still 154.1 MB. Free memory was 117.2 MB in the beginning and 132.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 153043.96 ms. Allocated memory was 154.1 MB in the beginning and 245.4 MB in the end (delta: 91.2 MB). Free memory was 132.4 MB in the beginning and 161.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 62.4 MB. Max. memory is 8.0 GB. * Witness Printer took 4.93 ms. Allocated memory is still 245.4 MB. Free memory was 161.2 MB in the beginning and 160.7 MB in the end (delta: 519.6 kB). There was no memory consumed. 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: [L23] unsigned int A, B; [L24] long long r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 152.9s, OverallIterations: 16, TraceHistogramMax: 4, AutomataDifference: 70.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 416 SDtfs, 1407 SDslu, 1232 SDs, 0 SdLazy, 2747 SolverSat, 517 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 42.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 499 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 37.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred 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: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 131 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 436 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 421 ConstructedInterpolants, 0 QuantifiedInterpolants, 219497 SizeOfPredicates, 131 NumberOfNonLiveVariables, 1494 ConjunctsInSsa, 418 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 55/248 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...