/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/hard-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:13:12,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:13:12,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:13:12,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:13:12,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:13:12,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:13:12,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:13:12,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:13:12,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:13:12,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:13:12,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:13:12,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:13:12,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:13:12,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:13:12,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:13:12,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:13:12,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:13:12,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:13:12,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:13:12,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:13:12,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:13:12,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:13:12,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:13:12,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:13:12,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:13:12,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:13:12,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:13:12,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:13:12,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:13:12,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:13:12,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:13:12,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:13:12,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:13:12,448 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:13:12,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:13:12,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:13:12,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:13:12,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:13:12,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:13:12,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:13:12,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:13:12,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:13:12,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:13:12,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:13:12,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:13:12,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:13:12,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:13:12,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:13:12,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:13:12,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:13:12,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:13:12,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:13:12,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:13:12,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:13:12,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:13:12,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:13:12,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:13:12,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:13:12,868 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:13:12,869 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:13:12,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/hard-ll.c [2021-01-06 17:13:12,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/68dd36242/c64b81451bc54c96ba293c7be1bd5d96/FLAGeb3829333 [2021-01-06 17:13:13,658 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:13:13,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard-ll.c [2021-01-06 17:13:13,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/68dd36242/c64b81451bc54c96ba293c7be1bd5d96/FLAGeb3829333 [2021-01-06 17:13:13,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/68dd36242/c64b81451bc54c96ba293c7be1bd5d96 [2021-01-06 17:13:13,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:13:13,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:13:13,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:13:13,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:13:13,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:13:13,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:13,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b83b5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13, skipping insertion in model container [2021-01-06 17:13:13,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:13,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:13:13,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:13:13,894 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/hard-ll.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,] [2021-01-06 17:13:13,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:13:13,926 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:13:13,941 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/hard-ll.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,] [2021-01-06 17:13:13,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:13:13,967 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:13:13,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13 WrapperNode [2021-01-06 17:13:13,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:13:13,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:13:13,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:13:13,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:13:13,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:13,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:14,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:13:14,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:13:14,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:13:14,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:13:14,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:14,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:14,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:14,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:14,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:14,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:14,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (1/1) ... [2021-01-06 17:13:14,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:13:14,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:13:14,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:13:14,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:13:14,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (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 [2021-01-06 17:13:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:13:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:13:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:13:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:13:14,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:13:14,550 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:13:14,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:13:14 BoogieIcfgContainer [2021-01-06 17:13:14,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:13:14,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:13:14,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:13:14,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:13:14,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:13:13" (1/3) ... [2021-01-06 17:13:14,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc42536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:13:14, skipping insertion in model container [2021-01-06 17:13:14,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:13:13" (2/3) ... [2021-01-06 17:13:14,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc42536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:13:14, skipping insertion in model container [2021-01-06 17:13:14,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:13:14" (3/3) ... [2021-01-06 17:13:14,571 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll.c [2021-01-06 17:13:14,584 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:13:14,590 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:13:14,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:13:14,664 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:13:14,664 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:13:14,664 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:13:14,664 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:13:14,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:13:14,666 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:13:14,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:13:14,667 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:13:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-01-06 17:13:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:13:14,693 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:14,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:14,695 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]=== [2021-01-06 17:13:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:14,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:13:14,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:14,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709471814] [2021-01-06 17:13:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:14,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709471814] [2021-01-06 17:13:14,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:13:14,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:13:14,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861621880] [2021-01-06 17:13:14,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:13:14,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:14,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:13:14,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:13:14,966 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2021-01-06 17:13:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:14,997 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-01-06 17:13:14,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:13:14,998 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:13:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:15,021 INFO L225 Difference]: With dead ends: 75 [2021-01-06 17:13:15,021 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 17:13:15,027 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 [2021-01-06 17:13:15,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 17:13:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-01-06 17:13:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:13:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-01-06 17:13:15,077 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-01-06 17:13:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:15,078 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-01-06 17:13:15,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:13:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-01-06 17:13:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:13:15,079 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:15,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:15,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:13:15,083 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]=== [2021-01-06 17:13:15,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:15,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:13:15,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:15,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013764204] [2021-01-06 17:13:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:15,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013764204] [2021-01-06 17:13:15,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:13:15,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:13:15,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932941709] [2021-01-06 17:13:15,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:13:15,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:15,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:13:15,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:13:15,192 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2021-01-06 17:13:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:15,278 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-01-06 17:13:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:13:15,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-06 17:13:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:15,280 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:13:15,281 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:13:15,282 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 [2021-01-06 17:13:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:13:15,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-01-06 17:13:15,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:13:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-01-06 17:13:15,290 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2021-01-06 17:13:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:15,290 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-01-06 17:13:15,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:13:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-01-06 17:13:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:13:15,291 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:15,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:15,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:13:15,292 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]=== [2021-01-06 17:13:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:15,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-01-06 17:13:15,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:15,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671915225] [2021-01-06 17:13:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:15,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671915225] [2021-01-06 17:13:15,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:13:15,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:13:15,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919908741] [2021-01-06 17:13:15,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:13:15,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:15,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:13:15,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:13:15,372 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2021-01-06 17:13:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:15,453 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-01-06 17:13:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:13:15,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:13:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:15,455 INFO L225 Difference]: With dead ends: 52 [2021-01-06 17:13:15,455 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:13:15,456 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 [2021-01-06 17:13:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:13:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2021-01-06 17:13:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 17:13:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-01-06 17:13:15,464 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-01-06 17:13:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:15,465 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-01-06 17:13:15,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:13:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-01-06 17:13:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:13:15,466 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:15,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:15,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:13:15,466 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]=== [2021-01-06 17:13:15,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-01-06 17:13:15,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:15,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89190365] [2021-01-06 17:13:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:15,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:15,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50854930] [2021-01-06 17:13:15,485 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 [2021-01-06 17:13:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:15,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:13:15,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:15,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89190365] [2021-01-06 17:13:15,627 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:15,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50854930] [2021-01-06 17:13:15,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:13:15,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:13:15,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186392129] [2021-01-06 17:13:15,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:13:15,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:15,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:13:15,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:13:15,630 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2021-01-06 17:13:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:15,739 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-01-06 17:13:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:13:15,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:13:15,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:15,741 INFO L225 Difference]: With dead ends: 72 [2021-01-06 17:13:15,741 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:13:15,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:13:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:13:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-01-06 17:13:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:13:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-01-06 17:13:15,754 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-01-06 17:13:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:15,755 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-01-06 17:13:15,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:13:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-01-06 17:13:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:13:15,756 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:15,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:15,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:15,970 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]=== [2021-01-06 17:13:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:15,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2021-01-06 17:13:15,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:15,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024677154] [2021-01-06 17:13:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:15,987 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:15,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157459704] [2021-01-06 17:13:15,988 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 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 [2021-01-06 17:13:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:16,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 17:13:16,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:16,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024677154] [2021-01-06 17:13:16,181 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:16,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157459704] [2021-01-06 17:13:16,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:13:16,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:13:16,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403939383] [2021-01-06 17:13:16,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:13:16,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:16,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:13:16,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:13:16,184 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2021-01-06 17:13:16,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:16,350 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-01-06 17:13:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:13:16,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-01-06 17:13:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:16,352 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:13:16,353 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:13:16,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:13:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:13:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-01-06 17:13:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:13:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-01-06 17:13:16,363 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-01-06 17:13:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:16,363 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-01-06 17:13:16,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:13:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-01-06 17:13:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:13:16,364 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:16,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:16,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:16,573 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]=== [2021-01-06 17:13:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-01-06 17:13:16,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:16,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891821031] [2021-01-06 17:13:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:16,591 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:16,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016017245] [2021-01-06 17:13:16,591 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 [2021-01-06 17:13:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:16,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:13:16,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:16,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891821031] [2021-01-06 17:13:16,803 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:16,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016017245] [2021-01-06 17:13:16,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:16,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:13:16,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547511182] [2021-01-06 17:13:16,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:13:16,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:16,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:13:16,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:13:16,806 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 9 states. [2021-01-06 17:13:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:17,187 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-01-06 17:13:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:13:17,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2021-01-06 17:13:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:17,189 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:13:17,189 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:13:17,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:13:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:13:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-01-06 17:13:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 17:13:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-01-06 17:13:17,202 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 18 [2021-01-06 17:13:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:17,203 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-01-06 17:13:17,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:13:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-01-06 17:13:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:13:17,204 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:17,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:17,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:17,421 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]=== [2021-01-06 17:13:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:17,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-01-06 17:13:17,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:17,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43168468] [2021-01-06 17:13:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:17,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:17,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129051393] [2021-01-06 17:13:17,438 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 [2021-01-06 17:13:17,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:13:17,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:13:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-06 17:13:17,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:17,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43168468] [2021-01-06 17:13:17,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:17,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129051393] [2021-01-06 17:13:17,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:17,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:13:17,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571920817] [2021-01-06 17:13:17,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:13:17,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:17,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:13:17,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:13:17,906 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 13 states. [2021-01-06 17:13:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:18,581 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2021-01-06 17:13:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:13:18,581 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2021-01-06 17:13:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:18,584 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:13:18,584 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:13:18,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:13:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:13:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2021-01-06 17:13:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 17:13:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-01-06 17:13:18,600 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2021-01-06 17:13:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:18,601 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-01-06 17:13:18,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:13:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-01-06 17:13:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:13:18,602 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:18,602 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] [2021-01-06 17:13:18,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:18,816 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]=== [2021-01-06 17:13:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:18,816 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2021-01-06 17:13:18,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:18,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798041004] [2021-01-06 17:13:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:18,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:18,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695978038] [2021-01-06 17:13:18,846 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 [2021-01-06 17:13:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:18,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:13:18,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:19,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798041004] [2021-01-06 17:13:19,271 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:19,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695978038] [2021-01-06 17:13:19,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:19,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:13:19,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151544208] [2021-01-06 17:13:19,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:13:19,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:19,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:13:19,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:13:19,275 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 10 states. [2021-01-06 17:13:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:19,949 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-01-06 17:13:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:13:19,949 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2021-01-06 17:13:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:19,951 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:13:19,951 INFO L226 Difference]: Without dead ends: 99 [2021-01-06 17:13:19,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:13:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-06 17:13:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2021-01-06 17:13:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 17:13:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-01-06 17:13:19,968 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 27 [2021-01-06 17:13:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:19,968 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-01-06 17:13:19,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:13:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-01-06 17:13:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:13:19,970 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:19,970 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] [2021-01-06 17:13:20,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:20,185 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]=== [2021-01-06 17:13:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:20,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1100255215, now seen corresponding path program 1 times [2021-01-06 17:13:20,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:20,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097605913] [2021-01-06 17:13:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:20,200 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:20,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977930363] [2021-01-06 17:13:20,200 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 [2021-01-06 17:13:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:20,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:13:20,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:20,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097605913] [2021-01-06 17:13:20,489 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:20,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977930363] [2021-01-06 17:13:20,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:20,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:13:20,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814539905] [2021-01-06 17:13:20,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:13:20,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:20,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:13:20,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:13:20,492 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 9 states. [2021-01-06 17:13:20,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:20,949 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2021-01-06 17:13:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:13:20,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2021-01-06 17:13:20,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:20,951 INFO L225 Difference]: With dead ends: 117 [2021-01-06 17:13:20,951 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 17:13:20,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:13:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 17:13:20,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-01-06 17:13:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-06 17:13:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2021-01-06 17:13:20,975 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 29 [2021-01-06 17:13:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:20,976 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2021-01-06 17:13:20,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:13:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2021-01-06 17:13:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:13:20,977 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:20,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:21,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:21,193 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]=== [2021-01-06 17:13:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:21,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2021-01-06 17:13:21,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:21,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143406594] [2021-01-06 17:13:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:21,207 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:21,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948166267] [2021-01-06 17:13:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:21,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:13:21,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:21,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143406594] [2021-01-06 17:13:21,537 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:21,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948166267] [2021-01-06 17:13:21,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:21,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:13:21,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802985799] [2021-01-06 17:13:21,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:13:21,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:21,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:13:21,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:13:21,540 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 10 states. [2021-01-06 17:13:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:22,506 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2021-01-06 17:13:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:13:22,507 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2021-01-06 17:13:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:22,509 INFO L225 Difference]: With dead ends: 125 [2021-01-06 17:13:22,509 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 17:13:22,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:13:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 17:13:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2021-01-06 17:13:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:13:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2021-01-06 17:13:22,524 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 32 [2021-01-06 17:13:22,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:22,524 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2021-01-06 17:13:22,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:13:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2021-01-06 17:13:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:13:22,525 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:22,525 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:22,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:13:22,739 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]=== [2021-01-06 17:13:22,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:22,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 3 times [2021-01-06 17:13:22,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:22,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042226745] [2021-01-06 17:13:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:22,752 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:22,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21807636] [2021-01-06 17:13:22,753 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 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 [2021-01-06 17:13:22,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:13:22,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:13:22,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:13:22,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-06 17:13:30,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042226745] [2021-01-06 17:13:30,500 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:30,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21807636] [2021-01-06 17:13:30,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:30,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:13:30,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946803553] [2021-01-06 17:13:30,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:13:30,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:30,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:13:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=48, Unknown=3, NotChecked=0, Total=72 [2021-01-06 17:13:30,503 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 9 states. [2021-01-06 17:14:41,310 WARN L197 SmtUtils]: Spent 18.20 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-01-06 17:15:01,538 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 18 [2021-01-06 17:15:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:16,347 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2021-01-06 17:15:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:15:16,373 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-01-06 17:15:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:16,374 INFO L225 Difference]: With dead ends: 107 [2021-01-06 17:15:16,374 INFO L226 Difference]: Without dead ends: 97 [2021-01-06 17:15:16,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=59, Invalid=110, Unknown=13, NotChecked=0, Total=182 [2021-01-06 17:15:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-06 17:15:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2021-01-06 17:15:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-06 17:15:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2021-01-06 17:15:16,391 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 32 [2021-01-06 17:15:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:16,391 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2021-01-06 17:15:16,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:15:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2021-01-06 17:15:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:15:16,393 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:16,393 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] [2021-01-06 17:15:16,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 17:15:16,608 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]=== [2021-01-06 17:15:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1996519097, now seen corresponding path program 2 times [2021-01-06 17:15:16,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:16,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753244783] [2021-01-06 17:15:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:16,623 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:16,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377495009] [2021-01-06 17:15:16,624 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 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 [2021-01-06 17:15:16,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:15:16,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:15:16,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-06 17:15:16,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:15:17,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753244783] [2021-01-06 17:15:17,290 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:17,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377495009] [2021-01-06 17:15:17,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:15:17,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:15:17,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772910396] [2021-01-06 17:15:17,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:15:17,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:15:17,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:15:17,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:15:17,292 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 13 states. [2021-01-06 17:15:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:18,351 INFO L93 Difference]: Finished difference Result 137 states and 158 transitions. [2021-01-06 17:15:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:15:18,352 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2021-01-06 17:15:18,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:18,353 INFO L225 Difference]: With dead ends: 137 [2021-01-06 17:15:18,353 INFO L226 Difference]: Without dead ends: 101 [2021-01-06 17:15:18,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:15:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-01-06 17:15:18,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2021-01-06 17:15:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-06 17:15:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-01-06 17:15:18,367 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 34 [2021-01-06 17:15:18,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:18,367 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-01-06 17:15:18,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:15:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-01-06 17:15:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:15:18,369 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:18,369 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] [2021-01-06 17:15:18,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:15:18,583 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]=== [2021-01-06 17:15:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:18,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 3 times [2021-01-06 17:15:18,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:18,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127840939] [2021-01-06 17:15:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:18,604 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:18,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288599142] [2021-01-06 17:15:18,605 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 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 [2021-01-06 17:15:18,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:15:18,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:15:18,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 61 conjunts are in the unsatisfiable core [2021-01-06 17:15:18,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:15:19,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127840939] [2021-01-06 17:15:19,550 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:19,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288599142] [2021-01-06 17:15:19,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:15:19,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:15:19,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84095562] [2021-01-06 17:15:19,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:15:19,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:15:19,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:15:19,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:15:19,552 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand 15 states. [2021-01-06 17:15:21,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:21,178 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2021-01-06 17:15:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:15:21,179 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2021-01-06 17:15:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:21,180 INFO L225 Difference]: With dead ends: 136 [2021-01-06 17:15:21,180 INFO L226 Difference]: Without dead ends: 103 [2021-01-06 17:15:21,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-01-06 17:15:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-06 17:15:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2021-01-06 17:15:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-01-06 17:15:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2021-01-06 17:15:21,193 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 40 [2021-01-06 17:15:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:21,194 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2021-01-06 17:15:21,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:15:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2021-01-06 17:15:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:15:21,195 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:21,195 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] [2021-01-06 17:15:21,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:15:21,409 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]=== [2021-01-06 17:15:21,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:21,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1666655538, now seen corresponding path program 4 times [2021-01-06 17:15:21,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:21,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782515182] [2021-01-06 17:15:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:21,431 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:21,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828681066] [2021-01-06 17:15:21,431 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 [2021-01-06 17:15:21,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:15:21,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:15:21,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-06 17:15:21,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:15:22,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782515182] [2021-01-06 17:15:22,227 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:22,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828681066] [2021-01-06 17:15:22,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:15:22,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:15:22,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714188679] [2021-01-06 17:15:22,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:15:22,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:15:22,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:15:22,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:15:22,229 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand 13 states. [2021-01-06 17:15:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:23,648 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2021-01-06 17:15:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:15:23,649 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2021-01-06 17:15:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:23,650 INFO L225 Difference]: With dead ends: 163 [2021-01-06 17:15:23,650 INFO L226 Difference]: Without dead ends: 128 [2021-01-06 17:15:23,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:15:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-01-06 17:15:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2021-01-06 17:15:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-06 17:15:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2021-01-06 17:15:23,670 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 41 [2021-01-06 17:15:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:23,671 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2021-01-06 17:15:23,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:15:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2021-01-06 17:15:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:15:23,672 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:23,672 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] [2021-01-06 17:15:23,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:15:23,885 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]=== [2021-01-06 17:15:23,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:23,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1928663159, now seen corresponding path program 2 times [2021-01-06 17:15:23,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:23,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165437925] [2021-01-06 17:15:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:23,911 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:23,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314001816] [2021-01-06 17:15:23,911 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 [2021-01-06 17:15:24,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:15:24,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:15:24,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-06 17:15:24,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:25,148 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2021-01-06 17:15:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:15:25,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165437925] [2021-01-06 17:15:25,309 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:25,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314001816] [2021-01-06 17:15:25,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:15:25,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-01-06 17:15:25,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291097940] [2021-01-06 17:15:25,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 17:15:25,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:15:25,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 17:15:25,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:15:25,315 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 18 states. [2021-01-06 17:15:27,146 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-01-06 17:15:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:27,324 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2021-01-06 17:15:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:15:27,325 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2021-01-06 17:15:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:27,326 INFO L225 Difference]: With dead ends: 144 [2021-01-06 17:15:27,326 INFO L226 Difference]: Without dead ends: 118 [2021-01-06 17:15:27,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2021-01-06 17:15:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-01-06 17:15:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-01-06 17:15:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 17:15:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2021-01-06 17:15:27,342 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 42 [2021-01-06 17:15:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:27,343 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2021-01-06 17:15:27,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 17:15:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2021-01-06 17:15:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:15:27,344 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:27,344 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] [2021-01-06 17:15:27,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:15:27,559 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]=== [2021-01-06 17:15:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:27,562 INFO L82 PathProgramCache]: Analyzing trace with hash 366986673, now seen corresponding path program 3 times [2021-01-06 17:15:27,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:27,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862603726] [2021-01-06 17:15:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:27,579 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:27,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973319628] [2021-01-06 17:15:27,582 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 [2021-01-06 17:15:27,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:15:27,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:15:27,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:15:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-01-06 17:15:27,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862603726] [2021-01-06 17:15:27,874 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:27,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973319628] [2021-01-06 17:15:27,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:15:27,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:15:27,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233232596] [2021-01-06 17:15:27,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:15:27,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:15:27,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:15:27,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:15:27,876 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand 8 states. [2021-01-06 17:15:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:37,561 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2021-01-06 17:15:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:15:37,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2021-01-06 17:15:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:37,563 INFO L225 Difference]: With dead ends: 132 [2021-01-06 17:15:37,564 INFO L226 Difference]: Without dead ends: 130 [2021-01-06 17:15:37,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:15:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-01-06 17:15:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2021-01-06 17:15:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 17:15:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-01-06 17:15:37,578 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 43 [2021-01-06 17:15:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:37,579 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-01-06 17:15:37,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:15:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-01-06 17:15:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:15:37,580 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:37,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:15:37,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:15:37,797 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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]=== [2021-01-06 17:15:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:37,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1273273436, now seen corresponding path program 2 times [2021-01-06 17:15:37,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:37,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871695100] [2021-01-06 17:15:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:37,822 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:37,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084528607] [2021-01-06 17:15:37,822 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:15:37,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:15:37,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:15:37,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:15:37,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:38,254 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:15:40,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:15:46,823 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:15:48,860 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:15:50,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871695100] [2021-01-06 17:15:50,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:50,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084528607] [2021-01-06 17:15:50,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:15:50,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:15:50,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:15:50,879 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:15:50,880 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:15:51,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:15:51,111 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:15:51,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:15:51 BoogieIcfgContainer [2021-01-06 17:15:51,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:15:51,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:15:51,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:15:51,113 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:15:51,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:13:14" (3/4) ... [2021-01-06 17:15:51,120 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:15:51,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:15:51,122 INFO L168 Benchmark]: Toolchain (without parser) took 157431.35 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 131.5 MB in the beginning and 173.8 MB in the end (delta: -42.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:51,123 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory was 128.7 MB in the beginning and 128.6 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:15:51,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.42 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:51,126 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.48 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:51,136 INFO L168 Benchmark]: Boogie Preprocessor took 28.05 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 118.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:51,137 INFO L168 Benchmark]: RCFGBuilder took 509.50 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 134.8 MB in the end (delta: -16.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:51,137 INFO L168 Benchmark]: TraceAbstraction took 156556.12 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 134.8 MB in the beginning and 174.6 MB in the end (delta: -39.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:51,138 INFO L168 Benchmark]: Witness Printer took 7.37 ms. Allocated memory is still 225.4 MB. Free memory was 174.3 MB in the beginning and 173.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:51,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory was 128.7 MB in the beginning and 128.6 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.42 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.0 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 44.48 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.05 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 118.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 509.50 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 134.8 MB in the end (delta: -16.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 156556.12 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 134.8 MB in the beginning and 174.6 MB in the end (delta: -39.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. * Witness Printer took 7.37 ms. Allocated memory is still 225.4 MB. Free memory was 174.3 MB in the beginning and 173.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] unsigned int A, B; [L24] long long r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L26] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 [L34] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p [L34] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p [L34] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L38] COND TRUE !(r >= d) [L44] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p [L44] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p [L44] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L48] COND TRUE !(p != 1) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 156.4s, OverallIterations: 17, TraceHistogramMax: 4, AutomataDifference: 125.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 341 SDtfs, 1611 SDslu, 989 SDs, 0 SdLazy, 2887 SolverSat, 632 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 70.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 496 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 63.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 166 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 411 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 395 ConstructedInterpolants, 1 QuantifiedInterpolants, 229951 SizeOfPredicates, 155 NumberOfNonLiveVariables, 1466 ConjunctsInSsa, 469 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 66/275 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...