/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:42:28,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:42:28,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:42:28,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:42:28,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:42:28,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:42:28,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:42:28,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:42:28,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:42:28,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:42:28,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:42:28,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:42:28,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:42:28,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:42:28,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:42:28,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:42:28,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:42:28,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:42:28,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:42:28,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:42:28,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:42:28,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:42:28,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:42:28,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:42:28,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:42:28,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:42:28,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:42:28,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:42:28,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:42:28,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:42:28,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:42:28,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:42:28,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:42:28,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:42:28,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:42:28,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:42:28,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:42:28,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:42:28,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:42:28,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:42:28,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:42:28,695 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:42:28,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:42:28,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:42:28,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:42:28,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:42:28,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:42:28,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:42:28,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:42:28,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:42:28,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:42:28,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:42:28,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:42:28,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:42:28,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:42:28,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:42:28,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:42:28,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:42:28,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:42:28,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:42:28,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:42:28,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:42:28,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:42:29,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:42:29,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:42:29,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:42:29,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:42:29,132 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:42:29,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2020-12-23 07:42:29,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2bb74188f/8aa0ef9cdf4240e387ccef31473e5207/FLAG0f7dd277f [2020-12-23 07:42:29,951 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:42:29,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2020-12-23 07:42:29,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2bb74188f/8aa0ef9cdf4240e387ccef31473e5207/FLAG0f7dd277f [2020-12-23 07:42:30,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2bb74188f/8aa0ef9cdf4240e387ccef31473e5207 [2020-12-23 07:42:30,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:42:30,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:42:30,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:42:30,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:42:30,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:42:30,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3050be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30, skipping insertion in model container [2020-12-23 07:42:30,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:42:30,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:42:30,471 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~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[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:42:30,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:42:30,510 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:42:30,525 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~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[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:42:30,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:42:30,560 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:42:30,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30 WrapperNode [2020-12-23 07:42:30,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:42:30,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:42:30,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:42:30,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:42:30,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:42:30,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:42:30,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:42:30,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:42:30,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... [2020-12-23 07:42:30,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:42:30,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:42:30,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:42:30,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:42:30,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:42:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:42:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:42:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:42:30,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:42:31,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:42:31,168 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-23 07:42:31,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:42:31 BoogieIcfgContainer [2020-12-23 07:42:31,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:42:31,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:42:31,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:42:31,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:42:31,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:42:30" (1/3) ... [2020-12-23 07:42:31,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1815c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:42:31, skipping insertion in model container [2020-12-23 07:42:31,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:30" (2/3) ... [2020-12-23 07:42:31,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1815c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:42:31, skipping insertion in model container [2020-12-23 07:42:31,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:42:31" (3/3) ... [2020-12-23 07:42:31,183 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2020-12-23 07:42:31,193 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:42:31,199 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 07:42:31,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 07:42:31,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:42:31,259 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:42:31,260 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:42:31,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:42:31,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:42:31,260 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:42:31,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:42:31,261 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:42:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:42:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:42:31,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:31,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:31,321 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:31,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:31,332 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2020-12-23 07:42:31,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:31,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010354644] [2020-12-23 07:42:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:31,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010354644] [2020-12-23 07:42:31,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:31,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:42:31,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912326471] [2020-12-23 07:42:31,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:42:31,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:31,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:42:31,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:42:31,659 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:42:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:31,710 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2020-12-23 07:42:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:42:31,712 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-23 07:42:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:31,735 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:42:31,735 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:42:31,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:42:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:42:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:42:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:42:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:42:31,804 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2020-12-23 07:42:31,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:31,804 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:42:31,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:42:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:42:31,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:42:31,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:31,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:31,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:42:31,808 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:31,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2020-12-23 07:42:31,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:31,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18171342] [2020-12-23 07:42:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:31,880 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:31,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573801999] [2020-12-23 07:42:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:32,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:42:32,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:32,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18171342] [2020-12-23 07:42:32,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:32,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573801999] [2020-12-23 07:42:32,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:32,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:32,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791504148] [2020-12-23 07:42:32,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:32,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:32,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:32,219 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-23 07:42:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:32,364 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-23 07:42:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:42:32,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 07:42:32,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:32,367 INFO L225 Difference]: With dead ends: 64 [2020-12-23 07:42:32,367 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 07:42:32,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:42:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 07:42:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2020-12-23 07:42:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:42:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:42:32,378 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2020-12-23 07:42:32,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:32,378 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:42:32,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:32,378 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:42:32,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:42:32,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:32,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:32,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:42:32,596 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:32,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:32,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2020-12-23 07:42:32,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:32,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858739666] [2020-12-23 07:42:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:32,624 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:32,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782777528] [2020-12-23 07:42:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:32,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:42:32,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:32,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858739666] [2020-12-23 07:42:32,940 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:32,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782777528] [2020-12-23 07:42:32,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:32,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 07:42:32,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663085363] [2020-12-23 07:42:32,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:42:32,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:32,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:42:32,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:32,943 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2020-12-23 07:42:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:33,329 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-12-23 07:42:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:42:33,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-23 07:42:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:33,331 INFO L225 Difference]: With dead ends: 60 [2020-12-23 07:42:33,331 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 07:42:33,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:42:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 07:42:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-12-23 07:42:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 07:42:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-12-23 07:42:33,342 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2020-12-23 07:42:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:33,342 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-12-23 07:42:33,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:42:33,343 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-12-23 07:42:33,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:42:33,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:33,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:33,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:33,560 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:33,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2020-12-23 07:42:33,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:33,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127071989] [2020-12-23 07:42:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:33,580 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:33,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883378744] [2020-12-23 07:42:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:33,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:42:33,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:33,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127071989] [2020-12-23 07:42:33,977 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:33,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883378744] [2020-12-23 07:42:33,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:33,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 07:42:33,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21209893] [2020-12-23 07:42:33,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:42:33,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:42:33,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:33,980 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 12 states. [2020-12-23 07:42:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:34,421 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-23 07:42:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:42:34,422 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-12-23 07:42:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:34,423 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:42:34,423 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:42:34,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:42:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:42:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-12-23 07:42:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 07:42:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-23 07:42:34,432 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2020-12-23 07:42:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:34,433 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-23 07:42:34,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:42:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-23 07:42:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:42:34,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:34,434 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:34,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:34,648 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2020-12-23 07:42:34,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:34,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288627759] [2020-12-23 07:42:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:34,667 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:34,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554793362] [2020-12-23 07:42:34,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:34,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:42:34,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:34,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288627759] [2020-12-23 07:42:34,801 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:34,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554793362] [2020-12-23 07:42:34,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:34,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:42:34,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818028272] [2020-12-23 07:42:34,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:42:34,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:34,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:42:34,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:42:34,806 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2020-12-23 07:42:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:35,015 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-12-23 07:42:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:42:35,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 07:42:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:35,017 INFO L225 Difference]: With dead ends: 140 [2020-12-23 07:42:35,018 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 07:42:35,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 07:42:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2020-12-23 07:42:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:42:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-12-23 07:42:35,033 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2020-12-23 07:42:35,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:35,033 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-12-23 07:42:35,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:42:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-12-23 07:42:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:42:35,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:35,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:35,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:35,249 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:35,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2020-12-23 07:42:35,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:35,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948134314] [2020-12-23 07:42:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:35,279 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:35,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468557504] [2020-12-23 07:42:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:35,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:42:35,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:35,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948134314] [2020-12-23 07:42:35,456 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:35,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468557504] [2020-12-23 07:42:35,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:35,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:42:35,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892718580] [2020-12-23 07:42:35,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:42:35,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:35,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:42:35,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:42:35,462 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 8 states. [2020-12-23 07:42:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:35,688 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-12-23 07:42:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:42:35,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-23 07:42:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:35,690 INFO L225 Difference]: With dead ends: 95 [2020-12-23 07:42:35,690 INFO L226 Difference]: Without dead ends: 93 [2020-12-23 07:42:35,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-23 07:42:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-12-23 07:42:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 07:42:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-12-23 07:42:35,706 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2020-12-23 07:42:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:35,706 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-12-23 07:42:35,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:42:35,707 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-12-23 07:42:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:42:35,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:35,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:35,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:42:35,922 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:35,923 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2020-12-23 07:42:35,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:35,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904458926] [2020-12-23 07:42:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:35,944 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:35,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338431659] [2020-12-23 07:42:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:36,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:42:36,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:36,407 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:42:36,414 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:42:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:36,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904458926] [2020-12-23 07:42:36,433 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:36,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338431659] [2020-12-23 07:42:36,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:36,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:42:36,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729053931] [2020-12-23 07:42:36,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:42:36,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:36,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:42:36,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:42:36,435 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 13 states. [2020-12-23 07:42:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:36,934 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2020-12-23 07:42:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:42:36,935 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-12-23 07:42:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:36,936 INFO L225 Difference]: With dead ends: 119 [2020-12-23 07:42:36,936 INFO L226 Difference]: Without dead ends: 117 [2020-12-23 07:42:36,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:42:36,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-23 07:42:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2020-12-23 07:42:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 07:42:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2020-12-23 07:42:36,954 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 22 [2020-12-23 07:42:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:36,955 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2020-12-23 07:42:36,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:42:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2020-12-23 07:42:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 07:42:36,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:36,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:37,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:37,170 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:37,171 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2020-12-23 07:42:37,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:37,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936476381] [2020-12-23 07:42:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:37,187 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:37,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821905938] [2020-12-23 07:42:37,200 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:37,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:42:37,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:37,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936476381] [2020-12-23 07:42:37,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:37,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821905938] [2020-12-23 07:42:37,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:37,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:37,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53546091] [2020-12-23 07:42:37,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:37,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:37,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:37,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:37,319 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand 5 states. [2020-12-23 07:42:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:37,499 INFO L93 Difference]: Finished difference Result 192 states and 240 transitions. [2020-12-23 07:42:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:42:37,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-23 07:42:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:37,505 INFO L225 Difference]: With dead ends: 192 [2020-12-23 07:42:37,505 INFO L226 Difference]: Without dead ends: 190 [2020-12-23 07:42:37,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:42:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-23 07:42:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2020-12-23 07:42:37,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-23 07:42:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 174 transitions. [2020-12-23 07:42:37,569 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 174 transitions. Word has length 23 [2020-12-23 07:42:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:37,570 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 174 transitions. [2020-12-23 07:42:37,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 174 transitions. [2020-12-23 07:42:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:42:37,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:37,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:37,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:37,789 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2020-12-23 07:42:37,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:37,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584883401] [2020-12-23 07:42:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:37,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:37,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824903659] [2020-12-23 07:42:37,807 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:37,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:42:37,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:38,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584883401] [2020-12-23 07:42:38,258 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:38,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824903659] [2020-12-23 07:42:38,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:38,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:42:38,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535651649] [2020-12-23 07:42:38,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:42:38,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:38,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:42:38,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:42:38,260 INFO L87 Difference]: Start difference. First operand 141 states and 174 transitions. Second operand 15 states. [2020-12-23 07:42:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:39,357 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2020-12-23 07:42:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 07:42:39,357 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-12-23 07:42:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:39,359 INFO L225 Difference]: With dead ends: 157 [2020-12-23 07:42:39,359 INFO L226 Difference]: Without dead ends: 155 [2020-12-23 07:42:39,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2020-12-23 07:42:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-23 07:42:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2020-12-23 07:42:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-23 07:42:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2020-12-23 07:42:39,380 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 24 [2020-12-23 07:42:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:39,380 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2020-12-23 07:42:39,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:42:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2020-12-23 07:42:39,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:42:39,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:39,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:39,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:42:39,598 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:39,598 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2020-12-23 07:42:39,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:39,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969787123] [2020-12-23 07:42:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:39,631 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:39,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620069963] [2020-12-23 07:42:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:39,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:42:39,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:39,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969787123] [2020-12-23 07:42:39,832 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:39,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620069963] [2020-12-23 07:42:39,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:39,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:42:39,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407358702] [2020-12-23 07:42:39,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:42:39,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:39,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:42:39,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:42:39,835 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand 11 states. [2020-12-23 07:42:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:40,259 INFO L93 Difference]: Finished difference Result 254 states and 297 transitions. [2020-12-23 07:42:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:42:40,260 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-12-23 07:42:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:40,262 INFO L225 Difference]: With dead ends: 254 [2020-12-23 07:42:40,262 INFO L226 Difference]: Without dead ends: 252 [2020-12-23 07:42:40,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:42:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-23 07:42:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 175. [2020-12-23 07:42:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-23 07:42:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2020-12-23 07:42:40,286 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 26 [2020-12-23 07:42:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:40,286 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2020-12-23 07:42:40,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:42:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2020-12-23 07:42:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:42:40,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:40,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:40,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:40,504 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:40,505 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2020-12-23 07:42:40,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:40,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243631978] [2020-12-23 07:42:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:40,532 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:40,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524964856] [2020-12-23 07:42:40,533 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:40,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:40,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:42:40,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:40,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243631978] [2020-12-23 07:42:40,660 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:40,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524964856] [2020-12-23 07:42:40,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:40,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:40,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774907801] [2020-12-23 07:42:40,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:40,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:40,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:40,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:40,662 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand 5 states. [2020-12-23 07:42:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:40,769 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2020-12-23 07:42:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:42:40,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-23 07:42:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:40,774 INFO L225 Difference]: With dead ends: 249 [2020-12-23 07:42:40,774 INFO L226 Difference]: Without dead ends: 167 [2020-12-23 07:42:40,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:42:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-12-23 07:42:40,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 93. [2020-12-23 07:42:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-23 07:42:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2020-12-23 07:42:40,792 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 27 [2020-12-23 07:42:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:40,792 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2020-12-23 07:42:40,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2020-12-23 07:42:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:42:40,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:40,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:41,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:41,015 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:41,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2020-12-23 07:42:41,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:41,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251041557] [2020-12-23 07:42:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:41,031 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:41,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489380337] [2020-12-23 07:42:41,031 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:41,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-23 07:42:41,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:41,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251041557] [2020-12-23 07:42:41,403 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:41,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489380337] [2020-12-23 07:42:41,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:41,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:42:41,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231513626] [2020-12-23 07:42:41,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:42:41,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:41,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:42:41,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:41,406 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 12 states. [2020-12-23 07:42:42,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:42,188 INFO L93 Difference]: Finished difference Result 233 states and 270 transitions. [2020-12-23 07:42:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:42:42,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-12-23 07:42:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:42,190 INFO L225 Difference]: With dead ends: 233 [2020-12-23 07:42:42,190 INFO L226 Difference]: Without dead ends: 174 [2020-12-23 07:42:42,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:42:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-23 07:42:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 110. [2020-12-23 07:42:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-23 07:42:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2020-12-23 07:42:42,215 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 32 [2020-12-23 07:42:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:42,215 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2020-12-23 07:42:42,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:42:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2020-12-23 07:42:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:42:42,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:42,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:42,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:42:42,430 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:42,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:42,431 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2020-12-23 07:42:42,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:42,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274418193] [2020-12-23 07:42:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:42,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:42,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886957636] [2020-12-23 07:42:42,444 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:42,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:42:42,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:42,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:42:42,741 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:42:42,743 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:42:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:42,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274418193] [2020-12-23 07:42:42,765 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:42,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886957636] [2020-12-23 07:42:42,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:42,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:42:42,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7123071] [2020-12-23 07:42:42,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:42:42,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:42,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:42:42,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:42:42,767 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 11 states. [2020-12-23 07:42:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:43,484 INFO L93 Difference]: Finished difference Result 222 states and 256 transitions. [2020-12-23 07:42:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:42:43,485 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-12-23 07:42:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:43,486 INFO L225 Difference]: With dead ends: 222 [2020-12-23 07:42:43,486 INFO L226 Difference]: Without dead ends: 156 [2020-12-23 07:42:43,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:42:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-23 07:42:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 137. [2020-12-23 07:42:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-23 07:42:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2020-12-23 07:42:43,522 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 32 [2020-12-23 07:42:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:43,522 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2020-12-23 07:42:43,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:42:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2020-12-23 07:42:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:42:43,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:43,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:43,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:42:43,738 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:43,739 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2020-12-23 07:42:43,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:43,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596802522] [2020-12-23 07:42:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:43,751 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:43,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387938534] [2020-12-23 07:42:43,752 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:43,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:43,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:43,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:42:43,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:43,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596802522] [2020-12-23 07:42:43,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:43,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387938534] [2020-12-23 07:42:43,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:43,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:42:43,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068395097] [2020-12-23 07:42:43,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:42:43,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:43,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:42:43,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:42:43,900 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand 8 states. [2020-12-23 07:42:44,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:44,334 INFO L93 Difference]: Finished difference Result 317 states and 360 transitions. [2020-12-23 07:42:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:42:44,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-23 07:42:44,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:44,337 INFO L225 Difference]: With dead ends: 317 [2020-12-23 07:42:44,337 INFO L226 Difference]: Without dead ends: 313 [2020-12-23 07:42:44,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:42:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-12-23 07:42:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 165. [2020-12-23 07:42:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-12-23 07:42:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2020-12-23 07:42:44,376 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 37 [2020-12-23 07:42:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:44,377 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2020-12-23 07:42:44,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:42:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2020-12-23 07:42:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:42:44,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:44,378 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, 1, 1, 1, 1, 1] [2020-12-23 07:42:44,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:42:44,592 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:44,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:44,593 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2020-12-23 07:42:44,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:44,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006117371] [2020-12-23 07:42:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:44,611 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:44,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332633894] [2020-12-23 07:42:44,612 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:44,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:42:44,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:44,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006117371] [2020-12-23 07:42:44,977 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:44,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332633894] [2020-12-23 07:42:44,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:44,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:42:44,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823989651] [2020-12-23 07:42:44,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:42:44,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:44,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:42:44,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:42:44,980 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand 15 states. [2020-12-23 07:42:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:46,171 INFO L93 Difference]: Finished difference Result 245 states and 281 transitions. [2020-12-23 07:42:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-23 07:42:46,172 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-12-23 07:42:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:46,173 INFO L225 Difference]: With dead ends: 245 [2020-12-23 07:42:46,173 INFO L226 Difference]: Without dead ends: 243 [2020-12-23 07:42:46,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 07:42:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-23 07:42:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 205. [2020-12-23 07:42:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-12-23 07:42:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 240 transitions. [2020-12-23 07:42:46,212 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 240 transitions. Word has length 37 [2020-12-23 07:42:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:46,213 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 240 transitions. [2020-12-23 07:42:46,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:42:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 240 transitions. [2020-12-23 07:42:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:42:46,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:46,214 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:46,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:46,428 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:46,429 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2020-12-23 07:42:46,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:46,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699438421] [2020-12-23 07:42:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:46,439 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:46,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271355703] [2020-12-23 07:42:46,440 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:46,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 07:42:46,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 07:42:46,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699438421] [2020-12-23 07:42:46,559 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:46,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271355703] [2020-12-23 07:42:46,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:46,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:46,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443638216] [2020-12-23 07:42:46,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:46,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:46,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:46,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:46,561 INFO L87 Difference]: Start difference. First operand 205 states and 240 transitions. Second operand 5 states. [2020-12-23 07:42:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:46,682 INFO L93 Difference]: Finished difference Result 348 states and 412 transitions. [2020-12-23 07:42:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:42:46,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-23 07:42:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:46,684 INFO L225 Difference]: With dead ends: 348 [2020-12-23 07:42:46,684 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 07:42:46,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:42:46,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 07:42:46,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 204. [2020-12-23 07:42:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-12-23 07:42:46,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 238 transitions. [2020-12-23 07:42:46,737 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 238 transitions. Word has length 38 [2020-12-23 07:42:46,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:46,738 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 238 transitions. [2020-12-23 07:42:46,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:46,738 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 238 transitions. [2020-12-23 07:42:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:42:46,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:46,739 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:46,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:42:46,952 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:46,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2020-12-23 07:42:46,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:46,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076196668] [2020-12-23 07:42:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:46,964 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:46,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484934294] [2020-12-23 07:42:46,964 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:47,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:42:47,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:47,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 07:42:47,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 07:42:47,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076196668] [2020-12-23 07:42:47,095 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:47,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484934294] [2020-12-23 07:42:47,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:47,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:47,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62765946] [2020-12-23 07:42:47,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:47,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:47,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:47,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:47,097 INFO L87 Difference]: Start difference. First operand 204 states and 238 transitions. Second operand 5 states. [2020-12-23 07:42:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:47,244 INFO L93 Difference]: Finished difference Result 237 states and 275 transitions. [2020-12-23 07:42:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:42:47,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-23 07:42:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:47,249 INFO L225 Difference]: With dead ends: 237 [2020-12-23 07:42:47,250 INFO L226 Difference]: Without dead ends: 235 [2020-12-23 07:42:47,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:42:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-12-23 07:42:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 222. [2020-12-23 07:42:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-23 07:42:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 260 transitions. [2020-12-23 07:42:47,290 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 260 transitions. Word has length 38 [2020-12-23 07:42:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:47,290 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 260 transitions. [2020-12-23 07:42:47,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 260 transitions. [2020-12-23 07:42:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:42:47,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:47,291 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:47,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:42:47,496 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:47,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:47,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2020-12-23 07:42:47,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:47,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605133333] [2020-12-23 07:42:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:47,507 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:47,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92073810] [2020-12-23 07:42:47,507 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:47,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 07:42:47,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 07:42:47,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605133333] [2020-12-23 07:42:47,704 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:47,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92073810] [2020-12-23 07:42:47,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:47,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 07:42:47,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139855285] [2020-12-23 07:42:47,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:42:47,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:47,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:42:47,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:42:47,706 INFO L87 Difference]: Start difference. First operand 222 states and 260 transitions. Second operand 9 states. [2020-12-23 07:42:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:48,052 INFO L93 Difference]: Finished difference Result 300 states and 345 transitions. [2020-12-23 07:42:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:42:48,052 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-12-23 07:42:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:48,054 INFO L225 Difference]: With dead ends: 300 [2020-12-23 07:42:48,054 INFO L226 Difference]: Without dead ends: 235 [2020-12-23 07:42:48,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:42:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-12-23 07:42:48,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 216. [2020-12-23 07:42:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-23 07:42:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2020-12-23 07:42:48,114 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 39 [2020-12-23 07:42:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:48,115 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2020-12-23 07:42:48,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:42:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2020-12-23 07:42:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 07:42:48,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:48,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:48,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:42:48,330 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:48,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2020-12-23 07:42:48,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:48,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048310777] [2020-12-23 07:42:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:48,340 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:48,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110680234] [2020-12-23 07:42:48,341 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:48,409 WARN L261 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 90 conjunts are in the unsatisfiable core [2020-12-23 07:42:48,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:49,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048310777] [2020-12-23 07:42:49,246 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:49,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110680234] [2020-12-23 07:42:49,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:49,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-23 07:42:49,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526866314] [2020-12-23 07:42:49,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 07:42:49,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:49,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 07:42:49,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:42:49,248 INFO L87 Difference]: Start difference. First operand 216 states and 251 transitions. Second operand 18 states. [2020-12-23 07:42:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:50,299 INFO L93 Difference]: Finished difference Result 312 states and 363 transitions. [2020-12-23 07:42:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 07:42:50,300 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2020-12-23 07:42:50,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:50,302 INFO L225 Difference]: With dead ends: 312 [2020-12-23 07:42:50,302 INFO L226 Difference]: Without dead ends: 248 [2020-12-23 07:42:50,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2020-12-23 07:42:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-12-23 07:42:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 237. [2020-12-23 07:42:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-23 07:42:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 273 transitions. [2020-12-23 07:42:50,354 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 273 transitions. Word has length 41 [2020-12-23 07:42:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:50,355 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 273 transitions. [2020-12-23 07:42:50,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 07:42:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 273 transitions. [2020-12-23 07:42:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:42:50,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:50,356 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:50,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:50,571 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:50,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:50,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2020-12-23 07:42:50,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:50,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602801918] [2020-12-23 07:42:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:50,584 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:50,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201970053] [2020-12-23 07:42:50,584 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:50,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:50,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:50,662 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 103 conjunts are in the unsatisfiable core [2020-12-23 07:42:50,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:51,718 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:42:51,722 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:42:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:51,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602801918] [2020-12-23 07:42:51,763 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:51,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201970053] [2020-12-23 07:42:51,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:51,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-12-23 07:42:51,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513237959] [2020-12-23 07:42:51,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 07:42:51,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:51,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 07:42:51,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:42:51,765 INFO L87 Difference]: Start difference. First operand 237 states and 273 transitions. Second operand 21 states. [2020-12-23 07:42:52,568 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-23 07:42:53,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:53,704 INFO L93 Difference]: Finished difference Result 351 states and 401 transitions. [2020-12-23 07:42:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 07:42:53,705 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 46 [2020-12-23 07:42:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:53,707 INFO L225 Difference]: With dead ends: 351 [2020-12-23 07:42:53,708 INFO L226 Difference]: Without dead ends: 341 [2020-12-23 07:42:53,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 07:42:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-12-23 07:42:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 258. [2020-12-23 07:42:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-23 07:42:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 297 transitions. [2020-12-23 07:42:53,789 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 297 transitions. Word has length 46 [2020-12-23 07:42:53,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:53,789 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 297 transitions. [2020-12-23 07:42:53,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 07:42:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 297 transitions. [2020-12-23 07:42:53,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:42:53,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:53,790 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:54,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:54,004 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:54,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2020-12-23 07:42:54,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:54,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199183518] [2020-12-23 07:42:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:54,015 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:54,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465390990] [2020-12-23 07:42:54,016 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:54,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:54,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:54,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:42:54,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:54,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199183518] [2020-12-23 07:42:54,308 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:54,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465390990] [2020-12-23 07:42:54,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:54,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:42:54,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023112105] [2020-12-23 07:42:54,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:42:54,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:54,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:42:54,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:54,319 INFO L87 Difference]: Start difference. First operand 258 states and 297 transitions. Second operand 12 states. [2020-12-23 07:42:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:55,004 INFO L93 Difference]: Finished difference Result 465 states and 537 transitions. [2020-12-23 07:42:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 07:42:55,005 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-12-23 07:42:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:55,008 INFO L225 Difference]: With dead ends: 465 [2020-12-23 07:42:55,008 INFO L226 Difference]: Without dead ends: 368 [2020-12-23 07:42:55,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:42:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-12-23 07:42:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 203. [2020-12-23 07:42:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-23 07:42:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 231 transitions. [2020-12-23 07:42:55,073 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 231 transitions. Word has length 46 [2020-12-23 07:42:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:55,074 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 231 transitions. [2020-12-23 07:42:55,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:42:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 231 transitions. [2020-12-23 07:42:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 07:42:55,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:55,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:55,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 07:42:55,288 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2020-12-23 07:42:55,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:55,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581734912] [2020-12-23 07:42:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:55,298 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:55,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288654958] [2020-12-23 07:42:55,299 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:55,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:42:55,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 07:42:55,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581734912] [2020-12-23 07:42:55,530 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:55,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288654958] [2020-12-23 07:42:55,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:55,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:42:55,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359490890] [2020-12-23 07:42:55,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:42:55,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:55,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:42:55,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:42:55,531 INFO L87 Difference]: Start difference. First operand 203 states and 231 transitions. Second operand 10 states. [2020-12-23 07:42:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:55,918 INFO L93 Difference]: Finished difference Result 345 states and 398 transitions. [2020-12-23 07:42:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:42:55,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-12-23 07:42:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:55,920 INFO L225 Difference]: With dead ends: 345 [2020-12-23 07:42:55,920 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 07:42:55,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:42:55,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 07:42:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-12-23 07:42:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-23 07:42:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2020-12-23 07:42:55,966 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 49 [2020-12-23 07:42:55,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:55,966 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2020-12-23 07:42:55,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:42:55,966 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2020-12-23 07:42:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 07:42:55,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:55,967 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:56,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:42:56,182 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:56,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:56,183 INFO L82 PathProgramCache]: Analyzing trace with hash -692384328, now seen corresponding path program 3 times [2020-12-23 07:42:56,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:56,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336050873] [2020-12-23 07:42:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:56,194 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:56,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990168999] [2020-12-23 07:42:56,195 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:56,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:42:56,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:56,262 WARN L261 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 87 conjunts are in the unsatisfiable core [2020-12-23 07:42:56,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 07:42:56,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336050873] [2020-12-23 07:42:56,895 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:56,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990168999] [2020-12-23 07:42:56,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:56,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:42:56,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798496884] [2020-12-23 07:42:56,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:42:56,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:56,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:42:56,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:42:56,897 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand 16 states. [2020-12-23 07:43:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:43:04,042 INFO L93 Difference]: Finished difference Result 247 states and 283 transitions. [2020-12-23 07:43:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 07:43:04,042 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-12-23 07:43:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:43:04,044 INFO L225 Difference]: With dead ends: 247 [2020-12-23 07:43:04,044 INFO L226 Difference]: Without dead ends: 237 [2020-12-23 07:43:04,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-12-23 07:43:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-23 07:43:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 173. [2020-12-23 07:43:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 07:43:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 197 transitions. [2020-12-23 07:43:04,093 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 197 transitions. Word has length 58 [2020-12-23 07:43:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:43:04,093 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 197 transitions. [2020-12-23 07:43:04,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:43:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 197 transitions. [2020-12-23 07:43:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 07:43:04,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:43:04,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:43:04,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:04,310 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:43:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:43:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1566045482, now seen corresponding path program 2 times [2020-12-23 07:43:04,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:43:04,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014787179] [2020-12-23 07:43:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:43:04,320 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:43:04,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494362234] [2020-12-23 07:43:04,320 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:04,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:43:04,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:43:04,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:43:04,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:43:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 07:43:04,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014787179] [2020-12-23 07:43:04,726 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:43:04,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494362234] [2020-12-23 07:43:04,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:43:04,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:43:04,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180095971] [2020-12-23 07:43:04,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:43:04,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:43:04,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:43:04,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:43:04,728 INFO L87 Difference]: Start difference. First operand 173 states and 197 transitions. Second operand 13 states. [2020-12-23 07:43:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:43:05,493 INFO L93 Difference]: Finished difference Result 386 states and 441 transitions. [2020-12-23 07:43:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:43:05,494 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-12-23 07:43:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:43:05,495 INFO L225 Difference]: With dead ends: 386 [2020-12-23 07:43:05,496 INFO L226 Difference]: Without dead ends: 283 [2020-12-23 07:43:05,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:43:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-12-23 07:43:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 200. [2020-12-23 07:43:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-23 07:43:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 231 transitions. [2020-12-23 07:43:05,555 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 231 transitions. Word has length 63 [2020-12-23 07:43:05,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:43:05,556 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 231 transitions. [2020-12-23 07:43:05,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:43:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 231 transitions. [2020-12-23 07:43:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 07:43:05,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:43:05,561 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:43:05,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 07:43:05,777 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:43:05,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:43:05,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1339399091, now seen corresponding path program 4 times [2020-12-23 07:43:05,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:43:05,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770160911] [2020-12-23 07:43:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:43:05,787 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:43:05,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187982618] [2020-12-23 07:43:05,787 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:05,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:43:05,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:43:05,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 07:43:05,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:43:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 43 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 07:43:05,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770160911] [2020-12-23 07:43:05,980 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:43:05,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187982618] [2020-12-23 07:43:05,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:43:05,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:43:05,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895518565] [2020-12-23 07:43:05,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:43:05,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:43:05,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:43:05,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:43:05,981 INFO L87 Difference]: Start difference. First operand 200 states and 231 transitions. Second operand 7 states. [2020-12-23 07:43:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:43:06,244 INFO L93 Difference]: Finished difference Result 404 states and 470 transitions. [2020-12-23 07:43:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:43:06,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-23 07:43:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:43:06,247 INFO L225 Difference]: With dead ends: 404 [2020-12-23 07:43:06,247 INFO L226 Difference]: Without dead ends: 250 [2020-12-23 07:43:06,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:43:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-23 07:43:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 219. [2020-12-23 07:43:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-12-23 07:43:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 260 transitions. [2020-12-23 07:43:06,310 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 260 transitions. Word has length 67 [2020-12-23 07:43:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:43:06,311 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 260 transitions. [2020-12-23 07:43:06,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:43:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 260 transitions. [2020-12-23 07:43:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 07:43:06,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:43:06,312 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:43:06,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:06,526 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:43:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:43:06,526 INFO L82 PathProgramCache]: Analyzing trace with hash 517253963, now seen corresponding path program 3 times [2020-12-23 07:43:06,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:43:06,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720760532] [2020-12-23 07:43:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:43:06,536 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:43:06,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122109864] [2020-12-23 07:43:06,537 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:06,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:43:06,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:43:06,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:43:06,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:43:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 51 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-23 07:43:06,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720760532] [2020-12-23 07:43:06,745 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:43:06,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122109864] [2020-12-23 07:43:06,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:43:06,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:43:06,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956165030] [2020-12-23 07:43:06,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:43:06,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:43:06,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:43:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:43:06,749 INFO L87 Difference]: Start difference. First operand 219 states and 260 transitions. Second operand 6 states. [2020-12-23 07:43:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:43:06,992 INFO L93 Difference]: Finished difference Result 245 states and 280 transitions. [2020-12-23 07:43:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:43:06,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-12-23 07:43:06,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:43:06,994 INFO L225 Difference]: With dead ends: 245 [2020-12-23 07:43:06,994 INFO L226 Difference]: Without dead ends: 243 [2020-12-23 07:43:06,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:43:06,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-23 07:43:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2020-12-23 07:43:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-12-23 07:43:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 256 transitions. [2020-12-23 07:43:07,061 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 256 transitions. Word has length 75 [2020-12-23 07:43:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:43:07,062 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 256 transitions. [2020-12-23 07:43:07,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:43:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 256 transitions. [2020-12-23 07:43:07,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-23 07:43:07,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:43:07,063 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:43:07,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 07:43:07,278 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:43:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:43:07,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1315727183, now seen corresponding path program 5 times [2020-12-23 07:43:07,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:43:07,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819115940] [2020-12-23 07:43:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:43:07,299 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:43:07,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511523533] [2020-12-23 07:43:07,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:07,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-23 07:43:07,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:43:07,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 07:43:07,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:43:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 95 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-12-23 07:43:07,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819115940] [2020-12-23 07:43:07,714 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:43:07,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511523533] [2020-12-23 07:43:07,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:43:07,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:43:07,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159516524] [2020-12-23 07:43:07,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:43:07,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:43:07,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:43:07,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:43:07,716 INFO L87 Difference]: Start difference. First operand 219 states and 256 transitions. Second operand 13 states. [2020-12-23 07:43:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:43:08,168 INFO L93 Difference]: Finished difference Result 219 states and 256 transitions. [2020-12-23 07:43:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:43:08,169 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-12-23 07:43:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:43:08,169 INFO L225 Difference]: With dead ends: 219 [2020-12-23 07:43:08,169 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:43:08,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:43:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:43:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:43:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:43:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:43:08,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2020-12-23 07:43:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:43:08,171 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:43:08,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:43:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:43:08,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:43:08,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 07:43:08,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:43:08,951 WARN L197 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 169 [2020-12-23 07:43:09,439 WARN L197 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 169 [2020-12-23 07:43:09,708 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 156 [2020-12-23 07:43:09,912 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 139 [2020-12-23 07:43:10,207 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 166 [2020-12-23 07:43:10,435 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 155 [2020-12-23 07:43:11,830 WARN L197 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 157 DAG size of output: 68 [2020-12-23 07:43:13,463 WARN L197 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-12-23 07:43:14,619 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 149 DAG size of output: 58 [2020-12-23 07:43:15,609 WARN L197 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 78 [2020-12-23 07:43:16,628 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2020-12-23 07:43:18,391 WARN L197 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 160 DAG size of output: 66 [2020-12-23 07:43:19,556 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 149 DAG size of output: 68 [2020-12-23 07:43:19,561 INFO L185 CegarLoopUtils]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_main_~r~0 1)) (.cse8 (<= ULTIMATE.start_main_~x~0 2)) (.cse2 (= ULTIMATE.start_main_~q~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse9 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~p~0 0)) (.cse11 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse12 (= ULTIMATE.start_main_~r~0 0)) (.cse13 (= ULTIMATE.start_main_~p~0 1)) (.cse14 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= 1 ULTIMATE.start_main_~b~0)) (.cse6 (<= ULTIMATE.start_main_~y~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 (< ULTIMATE.start_main_~c~0 2) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~s~0 0) .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 .cse7) (let ((.cse15 (div (+ (* ULTIMATE.start_main_~c~0 (- 1)) 2) 2))) (and (or (and .cse0 (= (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0) 0) .cse1 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) .cse8 .cse9 (= (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) 1) .cse4 .cse5) (and .cse10 .cse3 .cse8 .cse11 .cse12 .cse9 (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1)) .cse13 .cse14 .cse4)) (< 0 (+ (div (+ (* ULTIMATE.start_main_~b~0 (- 1)) 2) 2) ULTIMATE.start_main_~b~0)) (< ULTIMATE.start_main_~c~0 .cse15) (< 0 (+ ULTIMATE.start_main_~c~0 .cse15)) .cse6)) (and .cse0 .cse1 .cse8 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2))) .cse14 (= (+ ULTIMATE.start_main_~s~0 2) 0) .cse2 .cse10 .cse3 .cse9 .cse4 .cse5 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (and .cse11 (<= ULTIMATE.start_main_~a~0 2) .cse12 .cse13 (= ULTIMATE.start_main_~s~0 1) .cse14 (= ULTIMATE.start_main_~q~0 0) .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse7 .cse6))) [2020-12-23 07:43:19,562 INFO L189 CegarLoopUtils]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2020-12-23 07:43:19,562 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-23 07:43:19,562 INFO L189 CegarLoopUtils]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-23 07:43:19,562 INFO L185 CegarLoopUtils]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse21 (= ULTIMATE.start_main_~r~0 0)) (.cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (.cse22 (= ULTIMATE.start_main_~p~0 1)) (.cse23 (= ULTIMATE.start_main_~s~0 1)) (.cse24 (= ULTIMATE.start_main_~q~0 0)) (.cse25 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse15 (= ULTIMATE.start_main_~r~0 1)) (.cse16 (= ULTIMATE.start_main_~q~0 1)) (.cse17 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse18 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse13 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse19 (= ULTIMATE.start_main_~s~0 0)) (.cse20 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~p~0 0))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 2)) (.cse1 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse6 (let ((.cse26 (<= ULTIMATE.start_main_~x~0 2))) (or (and .cse26 .cse18 .cse21 .cse13 .cse9 .cse22 .cse23 .cse24 .cse25) (and (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse15 .cse16 .cse17 .cse26 .cse18 .cse13 .cse19 .cse20 .cse7)))) (.cse8 (= ULTIMATE.start_main_~k~0 0)) (.cse11 (let ((.cse14 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0))) (or (and .cse14 .cse15 .cse16 .cse17 .cse18 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse19 .cse20 .cse7) (and .cse14 .cse18 .cse21 .cse13 .cse9 .cse22 .cse23 .cse24 .cse25)))) (.cse2 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~c~0 2)) (.cse4 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse12 (= ULTIMATE.start_main_~d~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~b~0))) (or (and .cse0 (<= 1 (div ULTIMATE.start_main_~v~0 2)) (<= .cse1 ULTIMATE.start_main_~b~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 (<= ULTIMATE.start_main_~b~0 .cse1) .cse9 .cse5 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse6 .cse10) (and .cse11 .cse8 .cse9 .cse3 .cse5 .cse12 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse10) (and .cse11 .cse13 .cse2 .cse3 .cse4 .cse5 .cse12 .cse10)))) [2020-12-23 07:43:19,562 INFO L189 CegarLoopUtils]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2020-12-23 07:43:19,563 INFO L185 CegarLoopUtils]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~k~0 0)) (.cse10 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse11 (= ULTIMATE.start_main_~r~0 1)) (.cse12 (= ULTIMATE.start_main_~q~0 1)) (.cse13 (= ULTIMATE.start_main_~s~0 0)) (.cse14 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse15 (= ULTIMATE.start_main_~p~0 0)) (.cse1 (<= ULTIMATE.start_main_~x~0 2)) (.cse2 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_main_~r~0 0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_main_~p~0 1)) (.cse7 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (= ULTIMATE.start_main_~q~0 0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse17 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse16 (<= ULTIMATE.start_main_~y~0 2)) (.cse18 (<= 1 ULTIMATE.start_main_~b~0))) (or (and .cse0 (= ULTIMATE.start_main_~d~0 2) (<= ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse10 .cse11 .cse12 .cse2 .cse4 .cse13 .cse14 .cse15 .cse16)) .cse17 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse18) (and .cse0 (let ((.cse19 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0))) (or (and .cse10 .cse19 .cse11 .cse12 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse2 .cse4 .cse13 .cse14 .cse15) (and .cse19 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) .cse17 (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse16 .cse18))) [2020-12-23 07:43:19,563 INFO L189 CegarLoopUtils]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-23 07:43:19,563 INFO L189 CegarLoopUtils]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-12-23 07:43:19,563 INFO L185 CegarLoopUtils]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse13 (<= ULTIMATE.start_main_~x~0 2)) (.cse16 (= ULTIMATE.start_main_~p~0 1)) (.cse19 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse15 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (.cse17 (= ULTIMATE.start_main_~s~0 1)) (.cse18 (= ULTIMATE.start_main_~q~0 0)) (.cse21 (<= 1 ULTIMATE.start_main_~b~0)) (.cse0 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_main_~r~0 1)) (.cse22 (= ULTIMATE.start_main_~d~0 2)) (.cse3 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_main_~s~0 0)) (.cse6 (= ULTIMATE.start_main_~q~0 1)) (.cse7 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse8 (= ULTIMATE.start_main_~k~0 0)) (.cse9 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse23 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse20 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse10 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse11 (= ULTIMATE.start_main_~p~0 0)) (.cse12 (<= ULTIMATE.start_main_~y~0 2))) (or (and (let ((.cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse5 (= ULTIMATE.start_main_~d~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse1 .cse13 .cse8 .cse3 .cse9 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse5))) .cse20 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse21) (and .cse13 .cse22 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse16 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) .cse19 .cse8 (<= ULTIMATE.start_main_~b~0 .cse23) (<= (* 2 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~c~0) .cse14 .cse9 .cse15 .cse17 (<= (* 2 .cse23) 2) .cse18 .cse20 .cse21) (and .cse0 .cse2 .cse22 (<= 1 (div ULTIMATE.start_main_~v~0 2)) .cse3 .cse4 .cse6 .cse7 .cse8 .cse9 (<= .cse23 ULTIMATE.start_main_~b~0) .cse20 .cse10 .cse11 .cse12))) [2020-12-23 07:43:19,563 INFO L189 CegarLoopUtils]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2020-12-23 07:43:19,564 INFO L185 CegarLoopUtils]: At program point L11-11(lines 55 56) the Hoare annotation is: (let ((.cse12 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse13 (= ULTIMATE.start_main_~r~0 1)) (.cse1 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse15 (= ULTIMATE.start_main_~s~0 0)) (.cse4 (= ULTIMATE.start_main_~d~0 1)) (.cse16 (= ULTIMATE.start_main_~q~0 1)) (.cse17 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse19 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse20 (= ULTIMATE.start_main_~p~0 0)) (.cse21 (<= ULTIMATE.start_main_~y~0 2)) (.cse14 (= ULTIMATE.start_main_~d~0 2)) (.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~k~0 0)) (.cse18 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse6 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (= ULTIMATE.start_main_~s~0 1)) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse11 (<= 1 ULTIMATE.start_main_~b~0))) (or (and (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~x~0 2) .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) .cse3 .cse4 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 (<= 1 (div ULTIMATE.start_main_~v~0 2)) .cse1 .cse15 .cse16 .cse17 .cse5 .cse7 (<= .cse18 ULTIMATE.start_main_~b~0) .cse10 .cse19 .cse20 .cse21) (and .cse12 .cse13 .cse1 .cse15 .cse4 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse16 .cse17 .cse5 .cse7 (<= 1 ULTIMATE.start_main_~v~0) .cse10 .cse19 .cse20 .cse21 .cse11) (and .cse14 .cse0 .cse2 (<= ULTIMATE.start_main_~c~0 2) (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse3 .cse5 (<= ULTIMATE.start_main_~b~0 .cse18) .cse6 .cse7 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse8 .cse9 .cse10 .cse11))) [2020-12-23 07:43:19,564 INFO L189 CegarLoopUtils]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-12-23 07:43:19,564 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-23 07:43:19,564 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:43:19,564 INFO L192 CegarLoopUtils]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2020-12-23 07:43:19,564 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:43:19,564 INFO L189 CegarLoopUtils]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-23 07:43:19,564 INFO L189 CegarLoopUtils]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-23 07:43:19,564 INFO L189 CegarLoopUtils]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-23 07:43:19,564 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L185 CegarLoopUtils]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= ULTIMATE.start_main_~p~0 1)) (.cse8 (= ULTIMATE.start_main_~s~0 1)) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse11 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse12 (= ULTIMATE.start_main_~r~0 1)) (.cse13 (= ULTIMATE.start_main_~q~0 1)) (.cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse4 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse15 (= ULTIMATE.start_main_~s~0 0)) (.cse16 (= ULTIMATE.start_main_~p~0 0)) (.cse17 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (let ((.cse0 (= ULTIMATE.start_main_~k~0 0)) (.cse6 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (.cse18 (<= 1 ULTIMATE.start_main_~b~0)) (.cse19 (= ULTIMATE.start_main_~d~0 2)) (.cse21 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse20 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse22 (or (and .cse3 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse4 .cse5 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse12 .cse13 .cse14 .cse3 .cse4 .cse15 .cse16 .cse17)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (let ((.cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0))) (or (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse2 .cse12 .cse13 .cse14 .cse4 .cse15 .cse16 .cse17 (<= ULTIMATE.start_main_~y~0 2)))) .cse18) (and .cse0 .cse19 (<= ULTIMATE.start_main_~b~0 .cse20) .cse21 .cse6 .cse1 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse22 .cse18) (and .cse19 .cse21 (<= 1 (div ULTIMATE.start_main_~v~0 2)) (<= .cse20 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~c~0 2) (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) .cse1 .cse22 .cse16)))) [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2020-12-23 07:43:19,565 INFO L189 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2020-12-23 07:43:19,566 INFO L189 CegarLoopUtils]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-12-23 07:43:19,566 INFO L189 CegarLoopUtils]: For program point L8-4(line 8) no Hoare annotation was computed. [2020-12-23 07:43:19,566 INFO L189 CegarLoopUtils]: For program point L8-6(line 8) no Hoare annotation was computed. [2020-12-23 07:43:19,566 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:43:19,566 INFO L192 CegarLoopUtils]: At program point L75(lines 18 76) the Hoare annotation is: true [2020-12-23 07:43:19,566 INFO L185 CegarLoopUtils]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse24 (= ULTIMATE.start_main_~r~0 1)) (.cse25 (= ULTIMATE.start_main_~q~0 1)) (.cse26 (= ULTIMATE.start_main_~s~0 0)) (.cse7 (= ULTIMATE.start_main_~p~0 0)) (.cse27 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse21 (<= ULTIMATE.start_main_~x~0 2)) (.cse22 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse17 (= ULTIMATE.start_main_~r~0 0)) (.cse13 (= ULTIMATE.start_main_~p~0 1)) (.cse18 (= ULTIMATE.start_main_~s~0 1)) (.cse23 (<= 1 ULTIMATE.start_main_~x~0)) (.cse10 (= ULTIMATE.start_main_~q~0 0)) (.cse15 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse19 (<= ULTIMATE.start_main_~y~0 2))) (let ((.cse0 (= ULTIMATE.start_main_~k~0 2)) (.cse1 (= ULTIMATE.start_main_~d~0 2)) (.cse3 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse5 (or (and (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse24 .cse25 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse26 .cse7 .cse27 .cse19) (and .cse21 .cse22 .cse17 .cse13 .cse18 .cse23 .cse10 .cse15 .cse19))) (.cse6 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 2))) (.cse11 (* 2 ULTIMATE.start_main_~b~0)) (.cse8 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse9 (= ULTIMATE.start_main_~d~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse12 (< (* 2 ULTIMATE.start_main_~c~0) 2)) (.cse16 (= ULTIMATE.start_main_~k~0 0)) (.cse14 (<= ULTIMATE.start_main_~c~0 2)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse20 (<= 1 ULTIMATE.start_main_~b~0))) (or (and .cse0 .cse1 .cse2 (<= 1 (div ULTIMATE.start_main_~v~0 2)) (<= .cse3 ULTIMATE.start_main_~b~0) .cse4 .cse5 (= ULTIMATE.start_main_~y~0 .cse6) .cse7) (and .cse0 (or (and .cse8 .cse4 .cse9 .cse5) (and .cse1 (<= ULTIMATE.start_main_~b~0 .cse3) (<= (* 2 .cse3) 2) .cse4 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) .cse5)) .cse2 (= ULTIMATE.start_main_~x~0 .cse6) .cse10 (<= .cse11 ULTIMATE.start_main_~x~0) .cse12) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse13 .cse14 .cse15 .cse16 .cse17 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse18 (<= 1 ULTIMATE.start_main_~c~0) .cse10 .cse4 .cse19 .cse20) (and (= ULTIMATE.start_main_~k~0 1) .cse21 (<= 0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) .cse22 .cse13 .cse23 (< ULTIMATE.start_main_~x~0 .cse11) .cse8 .cse15 .cse9 .cse17 .cse2 .cse18 .cse10 .cse4 .cse12 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse19) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse24 .cse25 .cse16 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse26 .cse14 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) .cse4 .cse27 .cse7 .cse20)))) [2020-12-23 07:43:19,566 INFO L189 CegarLoopUtils]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2020-12-23 07:43:19,566 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-23 07:43:19,566 INFO L189 CegarLoopUtils]: For program point L43(lines 43 44) no Hoare annotation was computed. [2020-12-23 07:43:19,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:43:19 BoogieIcfgContainer [2020-12-23 07:43:19,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:43:19,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:43:19,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:43:19,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:43:19,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:42:31" (3/4) ... [2020-12-23 07:43:19,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:43:19,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-23 07:43:19,629 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:43:19,629 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:43:19,630 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:43:19,700 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/egcd3-ll_valuebound2.c-witness.graphml [2020-12-23 07:43:19,700 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:43:19,702 INFO L168 Benchmark]: Toolchain (without parser) took 49437.96 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 126.1 MB in the beginning and 126.9 MB in the end (delta: -798.6 kB). Peak memory consumption was 164.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:43:19,702 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 152.0 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:43:19,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.72 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 115.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:43:19,703 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 113.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:43:19,703 INFO L168 Benchmark]: Boogie Preprocessor took 31.65 ms. Allocated memory is still 152.0 MB. Free memory was 113.9 MB in the beginning and 112.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:43:19,704 INFO L168 Benchmark]: RCFGBuilder took 524.73 ms. Allocated memory is still 152.0 MB. Free memory was 112.5 MB in the beginning and 122.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:43:19,704 INFO L168 Benchmark]: TraceAbstraction took 48437.82 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 121.9 MB in the beginning and 131.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 182.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:43:19,705 INFO L168 Benchmark]: Witness Printer took 88.80 ms. Allocated memory is still 316.7 MB. Free memory was 131.6 MB in the beginning and 126.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:43:19,707 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 152.0 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.72 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 115.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 113.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.65 ms. Allocated memory is still 152.0 MB. Free memory was 113.9 MB in the beginning and 112.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 524.73 ms. Allocated memory is still 152.0 MB. Free memory was 112.5 MB in the beginning and 122.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48437.82 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 121.9 MB in the beginning and 131.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 182.8 MB. Max. memory is 8.0 GB. * Witness Printer took 88.80 ms. Allocated memory is still 316.7 MB. Free memory was 131.6 MB in the beginning and 126.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((k == 0 && cond == 1) && d == 1) && b <= c) && (((((((((b == v && x <= 2) && c == a) && r == 0) && c == x) && p == 1) && s == 1) && q == 0) && b == y) || (((((((((a <= y && b == v) && r == 1) && q == 1) && b < a) && c == a) && s == 0) && p == 0) && b == x) && y <= 2))) && 1 <= b) || (((((((((k == 0 && d == 2) && b <= v * -1 / -2) && 1 == cond) && c == x) && cond == 1) && v % -2 == 0) && v <= c) && ((((((((x <= 2 && a == x) && c == a) && r == 0) && p == 1) && s == 1) && q == 0) && b == y) || ((((((((a <= y && r == 1) && q == 1) && b < a) && x <= 2) && c == a) && s == 0) && p == 0) && b == x))) && 1 <= b)) || (((((((((d == 2 && 1 == cond) && 1 <= v / 2) && v * -1 / -2 <= b) && c == y) && c <= 2) && c + b * k == y) && cond == 1) && ((((((((x <= 2 && a == x) && c == a) && r == 0) && p == 1) && s == 1) && q == 0) && b == y) || ((((((((a <= y && r == 1) && q == 1) && b < a) && x <= 2) && c == a) && s == 0) && p == 0) && b == x))) && p == 0) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: (((((((((((((((((v <= b && x <= 2) && a == x) && c == a) && p == 1) && b <= v) && b == y) && d == 1) && b <= c) && k == 0) && r == 0) && 1 == cond) && s == 1) && q == 0) && cond == 1) && 1 <= b) || ((((((((((((((a <= y && r == 1) && d == 2) && 1 <= v / 2) && c == a) && s == 0) && q == 1) && b < a) && k == 0) && 1 == cond) && v * -1 / -2 <= b) && cond == 1) && b == x) && p == 0) && y <= 2)) || (((((((((((((((a <= y && r == 1) && c == a) && s == 0) && d == 1) && v < c) && q == 1) && b < a) && k == 0) && 1 == cond) && 1 <= v) && cond == 1) && b == x) && p == 0) && y <= 2) && 1 <= b)) || (((((((((((((((d == 2 && a == x) && p == 1) && c <= 2) && v % -2 == 0) && v <= c) && b == y) && k == 0) && b <= v * -1 / -2) && r == 0) && 1 == cond) && c == x) && s == 1) && q == 0) && cond == 1) && 1 <= b) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((k == 0 && d == 2) && b <= v * -1 / -2) && (((((((((x <= 2 && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y) || ((((((((a <= y && r == 1) && q == 1) && c == a) && 1 == cond) && s == 0) && b == x) && p == 0) && y <= 2))) && cond == 1) && v % -2 == 0) && v <= c) && 1 <= b) || ((((((k == 0 && ((((((((((a <= y && b == v) && r == 1) && q == 1) && b < a) && c == a) && 1 == cond) && s == 0) && b == x) && p == 0) || (((((((((b == v && x <= 2) && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y))) && cond == 1) && d == 1) && b <= c) && y <= 2) && 1 <= b) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((a == y && r == 1) && q == 1) && b < a) && c < 2) && 1 <= c) && s == 0) && cond == 1) && b == x) && p == 0) && y <= 2) && 1 <= b) || ((((((((((((((a == y && s + r == 0) && r == 1) && b < a) && x == b + y) && x <= 2) && 1 == cond) && q + p == 1) && cond == 1) && p == 0) || ((((((((((1 <= y && b < a) && x <= 2) && a == x) && r == 0) && 1 == cond) && b == q * x + y) && s == q * r + 1) && p == 1) && 1 <= x) && cond == 1)) && 0 < (b * -1 + 2) / 2 + b) && c < (c * -1 + 2) / 2) && 0 < c + (c * -1 + 2) / 2) && y <= 2)) || ((((((((((((a == y && r == 1) && x <= 2) && x == b + y * 2) && 1 <= x) && s + 2 == 0) && q == 1) && 1 <= y) && b < a) && 1 == cond) && cond == 1) && p == 0) && 2 * y <= x)) || ((((((((((a == x && a <= 2) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((k == 2 && d == 2) && 1 == cond) && 1 <= v / 2) && v * -1 / -2 <= b) && cond == 1) && ((((((((a <= y && r == 1) && q == 1) && b < a) && s == 0) && p == 0) && b == x) && y <= 2) || ((((((((x <= 2 && a == x) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && b == y) && y <= 2))) && y == c + b * 2) && p == 0) || ((((((k == 2 && ((((b <= v && cond == 1) && d == 1) && ((((((((a <= y && r == 1) && q == 1) && b < a) && s == 0) && p == 0) && b == x) && y <= 2) || ((((((((x <= 2 && a == x) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && b == y) && y <= 2))) || (((((d == 2 && b <= v * -1 / -2) && 2 * (v * -1 / -2) <= 2) && cond == 1) && v % -2 == 0) && ((((((((a <= y && r == 1) && q == 1) && b < a) && s == 0) && p == 0) && b == x) && y <= 2) || ((((((((x <= 2 && a == x) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && b == y) && y <= 2))))) && 1 == cond) && x == c + b * 2) && q == 0) && 2 * b <= x) && 2 * c < 2)) || ((((((((((((c == a && p == 1) && c <= 2) && b == y) && k == 0) && r == 0) && c == x) && s == 1) && 1 <= c) && q == 0) && cond == 1) && y <= 2) && 1 <= b)) || ((((((((((((((((((k == 1 && x <= 2) && 0 <= c) && v <= b) && a == x) && p == 1) && 1 <= x) && x < 2 * b) && b <= v) && b == y) && d == 1) && r == 0) && 1 == cond) && s == 1) && q == 0) && cond == 1) && 2 * c < 2) && b <= x) && y <= 2)) || (((((((((((a == y && r == 1) && q == 1) && k == 0) && b < c) && s == 0) && c <= 2) && c + b * k == y) && cond == 1) && b == x) && p == 0) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((((a <= y && b == v) && r == 1) && c == a) && s == 0) && d == 1) && q == 1) && b < a) && k == 0) && 1 == cond) && b == x) && p == 0) && y <= 2) || (((((((((((b == v && x <= 2) && k == 0) && c == a) && 1 == cond) && r == 0) && c == x) && p == 1) && s == 1) && q == 0) && b == y) && d == 1)) && cond == 1) && b <= c) && 1 <= b) || ((((((((((((((((x <= 2 && d == 2) && a == x) && p == 1) && v % -2 == 0) && b == y) && k == 0) && b <= v * -1 / -2) && 2 * b <= c) && r == 0) && 1 == cond) && c == x) && s == 1) && 2 * (v * -1 / -2) <= 2) && q == 0) && cond == 1) && 1 <= b)) || ((((((((((((((a <= y && r == 1) && d == 2) && 1 <= v / 2) && c == a) && s == 0) && q == 1) && b < a) && k == 0) && 1 == cond) && v * -1 / -2 <= b) && cond == 1) && b == x) && p == 0) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((d == 2 && 1 <= v / 2) && v * -1 / -2 <= b) && c == y) && c <= 2) && c + b * k == y) && cond == 1) && (((((((((x <= 2 && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y) || (((((((((a <= y && r == 1) && q == 1) && b < a) && x <= 2) && c == a) && 1 == cond) && s == 0) && b == x) && p == 0))) && p == 0) || ((((((((k == 0 && d == 2) && b <= v * -1 / -2) && c == x) && cond == 1) && v % -2 == 0) && v <= c) && (((((((((x <= 2 && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y) || (((((((((a <= y && r == 1) && q == 1) && b < a) && x <= 2) && c == a) && 1 == cond) && s == 0) && b == x) && p == 0))) && 1 <= b)) || ((((((((((((((((b == v && r == 1) && q == 1) && b < a) && c == a) && b < y) && s == 0) && b == x) && p == 0) || ((((((((b == v && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y)) && k == 0) && c == x) && c <= 2) && cond == 1) && d == 1) && b <= c) && 1 <= b)) || ((((((((((((((((b == v && r == 1) && q == 1) && b < a) && c == a) && b < y) && s == 0) && b == x) && p == 0) || ((((((((b == v && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y)) && 1 == cond) && c == y) && c <= 2) && c + b * k == y) && cond == 1) && d == 1) && 1 <= b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.1s, OverallIterations: 27, TraceHistogramMax: 6, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 969 SDtfs, 4509 SDslu, 3999 SDs, 0 SdLazy, 5307 SolverSat, 630 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1180 GetRequests, 759 SyntacticMatches, 4 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 27 MinimizatonAttempts, 1117 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 51 NumberOfFragments, 1831 HoareAnnotationTreeSize, 9 FomulaSimplifications, 206532 FormulaSimplificationTreeSizeReduction, 2.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 26807 FormulaSimplificationTreeSizeReductionInter, 9.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 931 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 983 ConstructedInterpolants, 0 QuantifiedInterpolants, 390033 SizeOfPredicates, 319 NumberOfNonLiveVariables, 3769 ConjunctsInSsa, 778 ConjunctsInUnsatCore, 27 InterpolantComputations, 10 PerfectInterpolantSequences, 488/653 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...