/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-178dd20 [2021-01-06 17:36:55,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:36:55,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:36:55,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:36:55,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:36:55,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:36:55,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:36:55,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:36:55,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:36:55,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:36:55,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:36:55,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:36:55,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:36:55,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:36:55,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:36:55,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:36:55,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:36:55,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:36:55,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:36:55,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:36:55,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:36:55,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:36:55,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:36:55,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:36:55,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:36:55,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:36:55,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:36:55,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:36:55,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:36:55,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:36:55,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:36:55,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:36:55,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:36:55,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:36:55,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:36:55,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:36:55,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:36:55,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:36:55,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:36:55,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:36:55,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:36:55,376 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:36:55,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:36:55,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:36:55,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:36:55,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:36:55,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:36:55,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:36:55,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:36:55,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:36:55,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:36:55,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:36:55,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:36:55,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:36:55,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:36:55,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:36:55,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:36:55,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:36:55,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:36:55,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:36:55,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:36:55,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:36:55,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:36:55,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:36:55,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:36:55,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:36:55,816 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:36:55,823 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:36:55,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-01-06 17:36:55,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/404bafb7c/ee4a7858ca324ccb8a7e4b9e92586927/FLAGad4bbc3a7 [2021-01-06 17:36:56,463 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:36:56,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-01-06 17:36:56,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/404bafb7c/ee4a7858ca324ccb8a7e4b9e92586927/FLAGad4bbc3a7 [2021-01-06 17:36:56,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/404bafb7c/ee4a7858ca324ccb8a7e4b9e92586927 [2021-01-06 17:36:56,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:36:56,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:36:56,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:36:56,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:36:56,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:36:56,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:36:56" (1/1) ... [2021-01-06 17:36:56,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb41e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:56, skipping insertion in model container [2021-01-06 17:36:56,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:36:56" (1/1) ... [2021-01-06 17:36:56,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:36:56,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:36:57,138 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,] [2021-01-06 17:36:57,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:36:57,220 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:36:57,238 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,] [2021-01-06 17:36:57,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:36:57,301 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:36:57,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57 WrapperNode [2021-01-06 17:36:57,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:36:57,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:36:57,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:36:57,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:36:57,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:36:57,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:36:57,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:36:57,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:36:57,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... [2021-01-06 17:36:57,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:36:57,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:36:57,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:36:57,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:36:57,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:36:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:36:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:36:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:36:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:36:57,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:36:57,970 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-01-06 17:36:57,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:36:57 BoogieIcfgContainer [2021-01-06 17:36:57,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:36:57,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:36:57,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:36:57,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:36:57,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:36:56" (1/3) ... [2021-01-06 17:36:57,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b2a031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:36:57, skipping insertion in model container [2021-01-06 17:36:57,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:36:57" (2/3) ... [2021-01-06 17:36:57,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b2a031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:36:57, skipping insertion in model container [2021-01-06 17:36:57,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:36:57" (3/3) ... [2021-01-06 17:36:57,986 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2021-01-06 17:36:57,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:36:58,004 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-01-06 17:36:58,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 17:36:58,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:36:58,053 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:36:58,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:36:58,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:36:58,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:36:58,053 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:36:58,053 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:36:58,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:36:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:36:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:36:58,077 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:36:58,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:36:58,079 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]=== [2021-01-06 17:36:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:36:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2021-01-06 17:36:58,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:36:58,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521072904] [2021-01-06 17:36:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:36:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:36:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:36:58,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521072904] [2021-01-06 17:36:58,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:36:58,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:36:58,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254427282] [2021-01-06 17:36:58,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:36:58,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:36:58,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:36:58,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:36:58,299 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:36:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:36:58,323 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2021-01-06 17:36:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:36:58,324 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-01-06 17:36:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:36:58,335 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:36:58,336 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:36:58,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:36:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:36:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:36:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:36:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-01-06 17:36:58,383 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2021-01-06 17:36:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:36:58,384 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-01-06 17:36:58,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:36:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-01-06 17:36:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:36:58,385 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:36:58,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:36:58,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:36:58,386 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]=== [2021-01-06 17:36:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:36:58,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2021-01-06 17:36:58,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:36:58,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895666077] [2021-01-06 17:36:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:36:58,416 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:36:58,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431846579] [2021-01-06 17:36:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:36:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:36:58,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:36:58,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:36:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:36:58,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895666077] [2021-01-06 17:36:58,684 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:36:58,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431846579] [2021-01-06 17:36:58,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:36:58,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:36:58,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384019424] [2021-01-06 17:36:58,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:36:58,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:36:58,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:36:58,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:36:58,689 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2021-01-06 17:36:58,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:36:58,967 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-01-06 17:36:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:36:58,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 17:36:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:36:58,970 INFO L225 Difference]: With dead ends: 64 [2021-01-06 17:36:58,970 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 17:36:58,972 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 [2021-01-06 17:36:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 17:36:58,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-01-06 17:36:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:36:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-01-06 17:36:58,982 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-01-06 17:36:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:36:58,982 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-01-06 17:36:58,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:36:58,982 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-01-06 17:36:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:36:58,983 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:36:58,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:36:59,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:36:59,192 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]=== [2021-01-06 17:36:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:36:59,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2021-01-06 17:36:59,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:36:59,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502808214] [2021-01-06 17:36:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:36:59,245 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:36:59,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011932957] [2021-01-06 17:36:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:36:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:36:59,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:36:59,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:36:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:36:59,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502808214] [2021-01-06 17:36:59,737 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:36:59,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011932957] [2021-01-06 17:36:59,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:36:59,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-06 17:36:59,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100453146] [2021-01-06 17:36:59,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:36:59,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:36:59,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:36:59,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:36:59,741 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2021-01-06 17:37:00,242 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2021-01-06 17:37:00,420 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2021-01-06 17:37:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:00,501 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-01-06 17:37:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:37:00,502 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2021-01-06 17:37:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:00,503 INFO L225 Difference]: With dead ends: 60 [2021-01-06 17:37:00,504 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 17:37:00,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:37:00,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 17:37:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-01-06 17:37:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 17:37:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-01-06 17:37:00,514 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-01-06 17:37:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:00,515 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-01-06 17:37:00,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:37:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-01-06 17:37:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:37:00,516 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:00,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:00,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:00,730 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]=== [2021-01-06 17:37:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:00,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2021-01-06 17:37:00,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:00,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069567518] [2021-01-06 17:37:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:00,753 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:00,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483205107] [2021-01-06 17:37:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:37:00,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:01,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069567518] [2021-01-06 17:37:01,216 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:01,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483205107] [2021-01-06 17:37:01,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:01,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-06 17:37:01,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195400818] [2021-01-06 17:37:01,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:37:01,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:01,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:37:01,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:37:01,219 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 12 states. [2021-01-06 17:37:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:01,679 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-01-06 17:37:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:37:01,680 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2021-01-06 17:37:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:01,681 INFO L225 Difference]: With dead ends: 58 [2021-01-06 17:37:01,681 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:37:01,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:37:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:37:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-01-06 17:37:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 17:37:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-01-06 17:37:01,691 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-01-06 17:37:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:01,691 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-01-06 17:37:01,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:37:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-01-06 17:37:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:37:01,693 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:01,693 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:01,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:01,909 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]=== [2021-01-06 17:37:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:01,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2021-01-06 17:37:01,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:01,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933892731] [2021-01-06 17:37:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:01,930 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:01,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096701264] [2021-01-06 17:37:01,930 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 [2021-01-06 17:37:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:01,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:37:01,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:02,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933892731] [2021-01-06 17:37:02,080 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:02,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096701264] [2021-01-06 17:37:02,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:02,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:37:02,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379044298] [2021-01-06 17:37:02,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:37:02,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:02,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:37:02,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:37:02,086 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2021-01-06 17:37:02,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:02,364 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-01-06 17:37:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:37:02,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-06 17:37:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:02,368 INFO L225 Difference]: With dead ends: 140 [2021-01-06 17:37:02,368 INFO L226 Difference]: Without dead ends: 136 [2021-01-06 17:37:02,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:37:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-06 17:37:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-01-06 17:37:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:37:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-01-06 17:37:02,397 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2021-01-06 17:37:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:02,397 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-01-06 17:37:02,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:37:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-01-06 17:37:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:37:02,401 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:02,401 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] [2021-01-06 17:37:02,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:02,605 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]=== [2021-01-06 17:37:02,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2021-01-06 17:37:02,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:02,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868317410] [2021-01-06 17:37:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:02,627 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:02,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546976909] [2021-01-06 17:37:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:37:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:02,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868317410] [2021-01-06 17:37:02,784 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:02,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546976909] [2021-01-06 17:37:02,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:02,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:37:02,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128420540] [2021-01-06 17:37:02,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:37:02,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:02,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:37:02,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:37:02,787 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 8 states. [2021-01-06 17:37:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:03,029 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-01-06 17:37:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:37:03,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-01-06 17:37:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:03,031 INFO L225 Difference]: With dead ends: 95 [2021-01-06 17:37:03,031 INFO L226 Difference]: Without dead ends: 93 [2021-01-06 17:37:03,032 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 [2021-01-06 17:37:03,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-06 17:37:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-01-06 17:37:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 17:37:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2021-01-06 17:37:03,046 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2021-01-06 17:37:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:03,046 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2021-01-06 17:37:03,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:37:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2021-01-06 17:37:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:37:03,047 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:03,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:03,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:37:03,263 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]=== [2021-01-06 17:37:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2021-01-06 17:37:03,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:03,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098033508] [2021-01-06 17:37:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:03,287 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:03,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922031501] [2021-01-06 17:37:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:03,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:37:03,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:03,741 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:37:03,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:37:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:03,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098033508] [2021-01-06 17:37:03,767 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:03,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922031501] [2021-01-06 17:37:03,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:03,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:37:03,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523578191] [2021-01-06 17:37:03,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:37:03,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:03,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:37:03,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:37:03,770 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 13 states. [2021-01-06 17:37:04,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:04,230 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2021-01-06 17:37:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:37:04,230 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2021-01-06 17:37:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:04,235 INFO L225 Difference]: With dead ends: 119 [2021-01-06 17:37:04,235 INFO L226 Difference]: Without dead ends: 117 [2021-01-06 17:37:04,237 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 [2021-01-06 17:37:04,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-01-06 17:37:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2021-01-06 17:37:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-01-06 17:37:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2021-01-06 17:37:04,273 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 22 [2021-01-06 17:37:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:04,273 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2021-01-06 17:37:04,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:37:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2021-01-06 17:37:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:37:04,275 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:04,275 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] [2021-01-06 17:37:04,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:04,489 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]=== [2021-01-06 17:37:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:04,490 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2021-01-06 17:37:04,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:04,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395045205] [2021-01-06 17:37:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:04,506 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:04,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907131376] [2021-01-06 17:37:04,507 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:04,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:37:04,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:04,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395045205] [2021-01-06 17:37:04,675 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:04,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907131376] [2021-01-06 17:37:04,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:04,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:04,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822299854] [2021-01-06 17:37:04,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:04,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:04,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:04,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:04,678 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand 5 states. [2021-01-06 17:37:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:04,877 INFO L93 Difference]: Finished difference Result 192 states and 240 transitions. [2021-01-06 17:37:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:37:04,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-01-06 17:37:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:04,886 INFO L225 Difference]: With dead ends: 192 [2021-01-06 17:37:04,887 INFO L226 Difference]: Without dead ends: 190 [2021-01-06 17:37:04,888 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 [2021-01-06 17:37:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-01-06 17:37:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2021-01-06 17:37:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-01-06 17:37:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 174 transitions. [2021-01-06 17:37:04,922 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 174 transitions. Word has length 23 [2021-01-06 17:37:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:04,922 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 174 transitions. [2021-01-06 17:37:04,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 174 transitions. [2021-01-06 17:37:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:37:04,928 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:04,929 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] [2021-01-06 17:37:05,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:05,143 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]=== [2021-01-06 17:37:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2021-01-06 17:37:05,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:05,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045787299] [2021-01-06 17:37:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:05,161 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:05,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051432459] [2021-01-06 17:37:05,162 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 [2021-01-06 17:37:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:05,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 17:37:05,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:05,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045787299] [2021-01-06 17:37:05,637 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:05,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051432459] [2021-01-06 17:37:05,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:05,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:37:05,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168555225] [2021-01-06 17:37:05,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:37:05,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:37:05,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:37:05,642 INFO L87 Difference]: Start difference. First operand 141 states and 174 transitions. Second operand 15 states. [2021-01-06 17:37:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:06,698 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2021-01-06 17:37:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:37:06,698 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2021-01-06 17:37:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:06,699 INFO L225 Difference]: With dead ends: 157 [2021-01-06 17:37:06,700 INFO L226 Difference]: Without dead ends: 155 [2021-01-06 17:37:06,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2021-01-06 17:37:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-01-06 17:37:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2021-01-06 17:37:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-01-06 17:37:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-01-06 17:37:06,717 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 24 [2021-01-06 17:37:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:06,718 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-01-06 17:37:06,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:37:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-01-06 17:37:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:37:06,719 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:06,719 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] [2021-01-06 17:37:06,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:37:06,934 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]=== [2021-01-06 17:37:06,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:06,935 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2021-01-06 17:37:06,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:06,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964073082] [2021-01-06 17:37:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:06,951 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:06,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140688111] [2021-01-06 17:37:06,951 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 [2021-01-06 17:37:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:07,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:37:07,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:07,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964073082] [2021-01-06 17:37:07,141 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:07,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140688111] [2021-01-06 17:37:07,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:07,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:37:07,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797593586] [2021-01-06 17:37:07,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:37:07,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:07,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:37:07,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:37:07,143 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand 11 states. [2021-01-06 17:37:07,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:07,524 INFO L93 Difference]: Finished difference Result 254 states and 297 transitions. [2021-01-06 17:37:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:37:07,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2021-01-06 17:37:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:07,526 INFO L225 Difference]: With dead ends: 254 [2021-01-06 17:37:07,526 INFO L226 Difference]: Without dead ends: 252 [2021-01-06 17:37:07,527 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 [2021-01-06 17:37:07,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-01-06 17:37:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 175. [2021-01-06 17:37:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2021-01-06 17:37:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2021-01-06 17:37:07,548 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 26 [2021-01-06 17:37:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:07,548 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2021-01-06 17:37:07,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:37:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2021-01-06 17:37:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:37:07,549 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:07,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:07,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:07,763 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]=== [2021-01-06 17:37:07,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:07,764 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2021-01-06 17:37:07,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:07,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832424717] [2021-01-06 17:37:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:07,780 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:07,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675087296] [2021-01-06 17:37:07,780 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 [2021-01-06 17:37:07,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:07,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:07,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:37:07,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:07,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832424717] [2021-01-06 17:37:07,878 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:07,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675087296] [2021-01-06 17:37:07,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:07,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:07,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589091815] [2021-01-06 17:37:07,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:07,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:07,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:07,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:07,880 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand 5 states. [2021-01-06 17:37:07,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:07,981 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2021-01-06 17:37:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:37:07,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2021-01-06 17:37:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:07,983 INFO L225 Difference]: With dead ends: 249 [2021-01-06 17:37:07,983 INFO L226 Difference]: Without dead ends: 167 [2021-01-06 17:37:07,984 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 [2021-01-06 17:37:07,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-01-06 17:37:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 93. [2021-01-06 17:37:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-06 17:37:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-01-06 17:37:07,996 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 27 [2021-01-06 17:37:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:07,997 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-01-06 17:37:07,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-01-06 17:37:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:37:07,998 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:07,998 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] [2021-01-06 17:37:08,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:08,212 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]=== [2021-01-06 17:37:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:08,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2021-01-06 17:37:08,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:08,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535414624] [2021-01-06 17:37:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:08,228 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:08,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666814935] [2021-01-06 17:37:08,229 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 [2021-01-06 17:37:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:08,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-06 17:37:08,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:08,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535414624] [2021-01-06 17:37:08,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:08,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666814935] [2021-01-06 17:37:08,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:08,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:37:08,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922882691] [2021-01-06 17:37:08,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:37:08,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:37:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:37:08,636 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 12 states. [2021-01-06 17:37:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:09,456 INFO L93 Difference]: Finished difference Result 233 states and 270 transitions. [2021-01-06 17:37:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:37:09,457 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2021-01-06 17:37:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:09,458 INFO L225 Difference]: With dead ends: 233 [2021-01-06 17:37:09,458 INFO L226 Difference]: Without dead ends: 174 [2021-01-06 17:37:09,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:37:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-01-06 17:37:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 110. [2021-01-06 17:37:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-01-06 17:37:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2021-01-06 17:37:09,484 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 32 [2021-01-06 17:37:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:09,485 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2021-01-06 17:37:09,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:37:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2021-01-06 17:37:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:37:09,485 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:09,486 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] [2021-01-06 17:37:09,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:37:09,699 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]=== [2021-01-06 17:37:09,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:09,700 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2021-01-06 17:37:09,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:09,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115154650] [2021-01-06 17:37:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:09,715 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:09,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442155853] [2021-01-06 17:37:09,716 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 [2021-01-06 17:37:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:09,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:37:09,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:09,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:37:09,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:37:09,990 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:37:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:10,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115154650] [2021-01-06 17:37:10,009 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:10,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442155853] [2021-01-06 17:37:10,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:10,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:37:10,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668868604] [2021-01-06 17:37:10,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:37:10,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:10,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:37:10,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:37:10,011 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 11 states. [2021-01-06 17:37:10,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:10,724 INFO L93 Difference]: Finished difference Result 222 states and 256 transitions. [2021-01-06 17:37:10,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:37:10,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2021-01-06 17:37:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:10,726 INFO L225 Difference]: With dead ends: 222 [2021-01-06 17:37:10,726 INFO L226 Difference]: Without dead ends: 156 [2021-01-06 17:37:10,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:37:10,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-01-06 17:37:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 137. [2021-01-06 17:37:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-01-06 17:37:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2021-01-06 17:37:10,754 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 32 [2021-01-06 17:37:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:10,755 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2021-01-06 17:37:10,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:37:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2021-01-06 17:37:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:37:10,755 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:10,756 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] [2021-01-06 17:37:10,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:37:10,968 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]=== [2021-01-06 17:37:10,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:10,969 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2021-01-06 17:37:10,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:10,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840617129] [2021-01-06 17:37:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:10,997 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:11,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860018122] [2021-01-06 17:37:11,001 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 [2021-01-06 17:37:11,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:11,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:11,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:37:11,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:11,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840617129] [2021-01-06 17:37:11,156 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:11,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860018122] [2021-01-06 17:37:11,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:11,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:37:11,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173763189] [2021-01-06 17:37:11,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:37:11,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:11,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:37:11,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:37:11,159 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand 8 states. [2021-01-06 17:37:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:11,560 INFO L93 Difference]: Finished difference Result 317 states and 360 transitions. [2021-01-06 17:37:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:37:11,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2021-01-06 17:37:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:11,562 INFO L225 Difference]: With dead ends: 317 [2021-01-06 17:37:11,562 INFO L226 Difference]: Without dead ends: 313 [2021-01-06 17:37:11,563 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 [2021-01-06 17:37:11,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-01-06 17:37:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 165. [2021-01-06 17:37:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-01-06 17:37:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2021-01-06 17:37:11,629 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 37 [2021-01-06 17:37:11,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:11,629 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2021-01-06 17:37:11,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:37:11,629 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2021-01-06 17:37:11,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:37:11,630 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:11,630 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] [2021-01-06 17:37:11,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:37:11,843 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]=== [2021-01-06 17:37:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:11,844 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2021-01-06 17:37:11,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:11,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066882179] [2021-01-06 17:37:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:11,856 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:11,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55664795] [2021-01-06 17:37:11,857 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 [2021-01-06 17:37:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:11,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:37:11,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:12,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066882179] [2021-01-06 17:37:12,201 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:12,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55664795] [2021-01-06 17:37:12,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:12,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:37:12,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196946031] [2021-01-06 17:37:12,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:37:12,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:12,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:37:12,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:37:12,203 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand 15 states. [2021-01-06 17:37:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:13,323 INFO L93 Difference]: Finished difference Result 245 states and 281 transitions. [2021-01-06 17:37:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 17:37:13,324 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2021-01-06 17:37:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:13,325 INFO L225 Difference]: With dead ends: 245 [2021-01-06 17:37:13,325 INFO L226 Difference]: Without dead ends: 243 [2021-01-06 17:37:13,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 17:37:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-01-06 17:37:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 205. [2021-01-06 17:37:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-01-06 17:37:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 240 transitions. [2021-01-06 17:37:13,367 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 240 transitions. Word has length 37 [2021-01-06 17:37:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:13,367 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 240 transitions. [2021-01-06 17:37:13,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:37:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 240 transitions. [2021-01-06 17:37:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:37:13,368 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:13,368 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] [2021-01-06 17:37:13,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:13,583 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]=== [2021-01-06 17:37:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:13,584 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2021-01-06 17:37:13,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:13,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771154663] [2021-01-06 17:37:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:13,596 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:13,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785738536] [2021-01-06 17:37:13,596 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 [2021-01-06 17:37:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:13,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:37:13,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 17:37:13,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771154663] [2021-01-06 17:37:13,714 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:13,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785738536] [2021-01-06 17:37:13,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:13,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:13,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956562065] [2021-01-06 17:37:13,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:13,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:13,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:13,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:13,716 INFO L87 Difference]: Start difference. First operand 205 states and 240 transitions. Second operand 5 states. [2021-01-06 17:37:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:13,822 INFO L93 Difference]: Finished difference Result 348 states and 412 transitions. [2021-01-06 17:37:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:37:13,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-01-06 17:37:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:13,824 INFO L225 Difference]: With dead ends: 348 [2021-01-06 17:37:13,824 INFO L226 Difference]: Without dead ends: 226 [2021-01-06 17:37:13,827 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 [2021-01-06 17:37:13,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-01-06 17:37:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 204. [2021-01-06 17:37:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-01-06 17:37:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 238 transitions. [2021-01-06 17:37:13,894 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 238 transitions. Word has length 38 [2021-01-06 17:37:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:13,894 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 238 transitions. [2021-01-06 17:37:13,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 238 transitions. [2021-01-06 17:37:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:37:13,895 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:13,895 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] [2021-01-06 17:37:14,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:37:14,110 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]=== [2021-01-06 17:37:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:14,111 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2021-01-06 17:37:14,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:14,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447872222] [2021-01-06 17:37:14,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:14,123 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:14,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948509985] [2021-01-06 17:37:14,124 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 [2021-01-06 17:37:14,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:37:14,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:14,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 17:37:14,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 17:37:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447872222] [2021-01-06 17:37:14,257 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:14,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948509985] [2021-01-06 17:37:14,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:14,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:14,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253980304] [2021-01-06 17:37:14,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:14,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:14,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:14,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:14,260 INFO L87 Difference]: Start difference. First operand 204 states and 238 transitions. Second operand 5 states. [2021-01-06 17:37:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:14,431 INFO L93 Difference]: Finished difference Result 237 states and 275 transitions. [2021-01-06 17:37:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:37:14,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-01-06 17:37:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:14,433 INFO L225 Difference]: With dead ends: 237 [2021-01-06 17:37:14,433 INFO L226 Difference]: Without dead ends: 235 [2021-01-06 17:37:14,434 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 [2021-01-06 17:37:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-01-06 17:37:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 222. [2021-01-06 17:37:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-01-06 17:37:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 260 transitions. [2021-01-06 17:37:14,485 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 260 transitions. Word has length 38 [2021-01-06 17:37:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:14,486 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 260 transitions. [2021-01-06 17:37:14,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 260 transitions. [2021-01-06 17:37:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:37:14,489 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:14,489 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] [2021-01-06 17:37:14,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:37:14,703 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]=== [2021-01-06 17:37:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2021-01-06 17:37:14,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:14,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572613673] [2021-01-06 17:37:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:14,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:14,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990999835] [2021-01-06 17:37:14,718 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 [2021-01-06 17:37:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:14,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 17:37:14,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 17:37:14,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572613673] [2021-01-06 17:37:14,887 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:14,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990999835] [2021-01-06 17:37:14,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:14,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:37:14,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010230031] [2021-01-06 17:37:14,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:37:14,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:14,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:37:14,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:37:14,889 INFO L87 Difference]: Start difference. First operand 222 states and 260 transitions. Second operand 9 states. [2021-01-06 17:37:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:15,182 INFO L93 Difference]: Finished difference Result 300 states and 345 transitions. [2021-01-06 17:37:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:37:15,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2021-01-06 17:37:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:15,185 INFO L225 Difference]: With dead ends: 300 [2021-01-06 17:37:15,185 INFO L226 Difference]: Without dead ends: 235 [2021-01-06 17:37:15,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:37:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-01-06 17:37:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 216. [2021-01-06 17:37:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-01-06 17:37:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2021-01-06 17:37:15,252 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 39 [2021-01-06 17:37:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:15,253 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2021-01-06 17:37:15,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:37:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2021-01-06 17:37:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:37:15,253 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:15,253 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] [2021-01-06 17:37:15,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:37:15,454 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]=== [2021-01-06 17:37:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:15,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2021-01-06 17:37:15,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:15,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552030738] [2021-01-06 17:37:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:15,465 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:15,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924981192] [2021-01-06 17:37:15,466 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 [2021-01-06 17:37:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:15,528 WARN L261 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 90 conjunts are in the unsatisfiable core [2021-01-06 17:37:15,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:16,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552030738] [2021-01-06 17:37:16,328 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:16,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924981192] [2021-01-06 17:37:16,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:16,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-01-06 17:37:16,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204521736] [2021-01-06 17:37:16,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 17:37:16,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:16,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 17:37:16,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:37:16,330 INFO L87 Difference]: Start difference. First operand 216 states and 251 transitions. Second operand 18 states. [2021-01-06 17:37:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:17,333 INFO L93 Difference]: Finished difference Result 312 states and 363 transitions. [2021-01-06 17:37:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 17:37:17,333 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2021-01-06 17:37:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:17,335 INFO L225 Difference]: With dead ends: 312 [2021-01-06 17:37:17,335 INFO L226 Difference]: Without dead ends: 248 [2021-01-06 17:37:17,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2021-01-06 17:37:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-01-06 17:37:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 237. [2021-01-06 17:37:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2021-01-06 17:37:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 273 transitions. [2021-01-06 17:37:17,388 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 273 transitions. Word has length 41 [2021-01-06 17:37:17,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:17,388 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 273 transitions. [2021-01-06 17:37:17,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 17:37:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 273 transitions. [2021-01-06 17:37:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:37:17,389 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:17,389 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] [2021-01-06 17:37:17,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:17,604 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]=== [2021-01-06 17:37:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2021-01-06 17:37:17,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:17,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40850679] [2021-01-06 17:37:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:17,623 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:17,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590801337] [2021-01-06 17:37:17,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-01-06 17:37:17,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:17,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:17,695 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 103 conjunts are in the unsatisfiable core [2021-01-06 17:37:17,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:18,675 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:37:18,678 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:37:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:18,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40850679] [2021-01-06 17:37:18,718 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:18,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590801337] [2021-01-06 17:37:18,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:18,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-01-06 17:37:18,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480319835] [2021-01-06 17:37:18,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 17:37:18,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:18,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 17:37:18,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:37:18,721 INFO L87 Difference]: Start difference. First operand 237 states and 273 transitions. Second operand 21 states. [2021-01-06 17:37:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:20,614 INFO L93 Difference]: Finished difference Result 351 states and 401 transitions. [2021-01-06 17:37:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 17:37:20,615 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 46 [2021-01-06 17:37:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:20,617 INFO L225 Difference]: With dead ends: 351 [2021-01-06 17:37:20,617 INFO L226 Difference]: Without dead ends: 341 [2021-01-06 17:37:20,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 17:37:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-01-06 17:37:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 258. [2021-01-06 17:37:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2021-01-06 17:37:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 297 transitions. [2021-01-06 17:37:20,711 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 297 transitions. Word has length 46 [2021-01-06 17:37:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:20,712 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 297 transitions. [2021-01-06 17:37:20,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 17:37:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 297 transitions. [2021-01-06 17:37:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:37:20,713 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:20,713 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] [2021-01-06 17:37:20,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:20,928 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]=== [2021-01-06 17:37:20,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:20,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2021-01-06 17:37:20,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:20,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603212226] [2021-01-06 17:37:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:20,940 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:20,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516709830] [2021-01-06 17:37:20,940 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 [2021-01-06 17:37:21,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:21,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:21,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:37:21,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:21,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603212226] [2021-01-06 17:37:21,220 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:21,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516709830] [2021-01-06 17:37:21,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:21,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:37:21,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855796190] [2021-01-06 17:37:21,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:37:21,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:21,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:37:21,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:37:21,223 INFO L87 Difference]: Start difference. First operand 258 states and 297 transitions. Second operand 12 states. [2021-01-06 17:37:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:21,887 INFO L93 Difference]: Finished difference Result 465 states and 537 transitions. [2021-01-06 17:37:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:37:21,887 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2021-01-06 17:37:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:21,889 INFO L225 Difference]: With dead ends: 465 [2021-01-06 17:37:21,890 INFO L226 Difference]: Without dead ends: 368 [2021-01-06 17:37:21,891 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 [2021-01-06 17:37:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-01-06 17:37:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 203. [2021-01-06 17:37:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2021-01-06 17:37:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 231 transitions. [2021-01-06 17:37:21,946 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 231 transitions. Word has length 46 [2021-01-06 17:37:21,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:21,946 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 231 transitions. [2021-01-06 17:37:21,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:37:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 231 transitions. [2021-01-06 17:37:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 17:37:21,946 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:21,946 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] [2021-01-06 17:37:22,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 17:37:22,147 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]=== [2021-01-06 17:37:22,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:22,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2021-01-06 17:37:22,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:22,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318322124] [2021-01-06 17:37:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:22,166 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:22,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511821610] [2021-01-06 17:37:22,167 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 [2021-01-06 17:37:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:22,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:37:22,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 17:37:22,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318322124] [2021-01-06 17:37:22,384 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:22,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511821610] [2021-01-06 17:37:22,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:22,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:37:22,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614076769] [2021-01-06 17:37:22,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:37:22,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:22,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:37:22,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:37:22,386 INFO L87 Difference]: Start difference. First operand 203 states and 231 transitions. Second operand 10 states. [2021-01-06 17:37:22,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:22,722 INFO L93 Difference]: Finished difference Result 345 states and 398 transitions. [2021-01-06 17:37:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:37:22,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2021-01-06 17:37:22,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:22,726 INFO L225 Difference]: With dead ends: 345 [2021-01-06 17:37:22,727 INFO L226 Difference]: Without dead ends: 179 [2021-01-06 17:37:22,727 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 [2021-01-06 17:37:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-01-06 17:37:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-01-06 17:37:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-01-06 17:37:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2021-01-06 17:37:22,763 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 49 [2021-01-06 17:37:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:22,763 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2021-01-06 17:37:22,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:37:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2021-01-06 17:37:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 17:37:22,764 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:22,764 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] [2021-01-06 17:37:22,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:37:22,965 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]=== [2021-01-06 17:37:22,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:22,966 INFO L82 PathProgramCache]: Analyzing trace with hash -692384328, now seen corresponding path program 3 times [2021-01-06 17:37:22,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:22,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307773215] [2021-01-06 17:37:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:22,975 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:22,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776553665] [2021-01-06 17:37:22,976 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 [2021-01-06 17:37:23,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:37:23,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:23,040 WARN L261 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 87 conjunts are in the unsatisfiable core [2021-01-06 17:37:23,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 17:37:23,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307773215] [2021-01-06 17:37:23,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:23,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776553665] [2021-01-06 17:37:23,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:23,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-01-06 17:37:23,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682133895] [2021-01-06 17:37:23,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 17:37:23,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:23,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 17:37:23,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:37:23,636 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand 16 states. [2021-01-06 17:37:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:30,674 INFO L93 Difference]: Finished difference Result 247 states and 283 transitions. [2021-01-06 17:37:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 17:37:30,674 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2021-01-06 17:37:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:30,676 INFO L225 Difference]: With dead ends: 247 [2021-01-06 17:37:30,676 INFO L226 Difference]: Without dead ends: 237 [2021-01-06 17:37:30,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-01-06 17:37:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-01-06 17:37:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 173. [2021-01-06 17:37:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-01-06 17:37:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 197 transitions. [2021-01-06 17:37:30,719 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 197 transitions. Word has length 58 [2021-01-06 17:37:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:30,720 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 197 transitions. [2021-01-06 17:37:30,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 17:37:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 197 transitions. [2021-01-06 17:37:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 17:37:30,720 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:30,720 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] [2021-01-06 17:37:30,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:30,936 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]=== [2021-01-06 17:37:30,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:30,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1566045482, now seen corresponding path program 2 times [2021-01-06 17:37:30,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:30,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257123128] [2021-01-06 17:37:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:30,946 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:30,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492562493] [2021-01-06 17:37:30,946 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 [2021-01-06 17:37:31,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:31,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:31,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:37:31,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 17:37:31,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257123128] [2021-01-06 17:37:31,313 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:31,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492562493] [2021-01-06 17:37:31,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:31,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:37:31,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516463386] [2021-01-06 17:37:31,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:37:31,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:31,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:37:31,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:37:31,315 INFO L87 Difference]: Start difference. First operand 173 states and 197 transitions. Second operand 13 states. [2021-01-06 17:37:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:32,027 INFO L93 Difference]: Finished difference Result 386 states and 441 transitions. [2021-01-06 17:37:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:37:32,028 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2021-01-06 17:37:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:32,029 INFO L225 Difference]: With dead ends: 386 [2021-01-06 17:37:32,030 INFO L226 Difference]: Without dead ends: 283 [2021-01-06 17:37:32,030 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 [2021-01-06 17:37:32,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-01-06 17:37:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 200. [2021-01-06 17:37:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-01-06 17:37:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 231 transitions. [2021-01-06 17:37:32,101 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 231 transitions. Word has length 63 [2021-01-06 17:37:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:32,101 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 231 transitions. [2021-01-06 17:37:32,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:37:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 231 transitions. [2021-01-06 17:37:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 17:37:32,108 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:32,108 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] [2021-01-06 17:37:32,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 17:37:32,322 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]=== [2021-01-06 17:37:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:32,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1339399091, now seen corresponding path program 4 times [2021-01-06 17:37:32,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:32,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099827649] [2021-01-06 17:37:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:32,332 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:32,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110704608] [2021-01-06 17:37:32,332 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 [2021-01-06 17:37:32,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:37:32,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:32,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 17:37:32,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 43 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 17:37:32,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099827649] [2021-01-06 17:37:32,531 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:32,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110704608] [2021-01-06 17:37:32,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:32,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:37:32,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568280394] [2021-01-06 17:37:32,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:37:32,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:32,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:37:32,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:37:32,533 INFO L87 Difference]: Start difference. First operand 200 states and 231 transitions. Second operand 7 states. [2021-01-06 17:37:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:32,791 INFO L93 Difference]: Finished difference Result 404 states and 470 transitions. [2021-01-06 17:37:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:37:32,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2021-01-06 17:37:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:32,793 INFO L225 Difference]: With dead ends: 404 [2021-01-06 17:37:32,794 INFO L226 Difference]: Without dead ends: 250 [2021-01-06 17:37:32,794 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 [2021-01-06 17:37:32,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-01-06 17:37:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 219. [2021-01-06 17:37:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-01-06 17:37:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 260 transitions. [2021-01-06 17:37:32,855 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 260 transitions. Word has length 67 [2021-01-06 17:37:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:32,855 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 260 transitions. [2021-01-06 17:37:32,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:37:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 260 transitions. [2021-01-06 17:37:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 17:37:32,856 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:32,856 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] [2021-01-06 17:37:33,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:33,069 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]=== [2021-01-06 17:37:33,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:33,070 INFO L82 PathProgramCache]: Analyzing trace with hash 517253963, now seen corresponding path program 3 times [2021-01-06 17:37:33,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:33,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707997239] [2021-01-06 17:37:33,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:33,080 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:33,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551726478] [2021-01-06 17:37:33,080 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 [2021-01-06 17:37:33,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:37:33,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:33,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:37:33,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 51 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-01-06 17:37:33,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707997239] [2021-01-06 17:37:33,252 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:33,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551726478] [2021-01-06 17:37:33,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:33,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:37:33,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333885517] [2021-01-06 17:37:33,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:37:33,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:33,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:37:33,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:37:33,253 INFO L87 Difference]: Start difference. First operand 219 states and 260 transitions. Second operand 6 states. [2021-01-06 17:37:33,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:33,477 INFO L93 Difference]: Finished difference Result 245 states and 280 transitions. [2021-01-06 17:37:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:37:33,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2021-01-06 17:37:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:33,480 INFO L225 Difference]: With dead ends: 245 [2021-01-06 17:37:33,480 INFO L226 Difference]: Without dead ends: 243 [2021-01-06 17:37:33,480 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 [2021-01-06 17:37:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-01-06 17:37:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2021-01-06 17:37:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-01-06 17:37:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 256 transitions. [2021-01-06 17:37:33,545 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 256 transitions. Word has length 75 [2021-01-06 17:37:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:33,545 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 256 transitions. [2021-01-06 17:37:33,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:37:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 256 transitions. [2021-01-06 17:37:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-06 17:37:33,546 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:33,546 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] [2021-01-06 17:37:33,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-06 17:37:33,759 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]=== [2021-01-06 17:37:33,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:33,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1315727183, now seen corresponding path program 5 times [2021-01-06 17:37:33,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:33,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893507666] [2021-01-06 17:37:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:33,769 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:33,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19452503] [2021-01-06 17:37:33,770 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 [2021-01-06 17:37:33,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-06 17:37:33,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:33,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 17:37:33,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 95 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-01-06 17:37:34,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893507666] [2021-01-06 17:37:34,171 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:34,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19452503] [2021-01-06 17:37:34,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:34,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:37:34,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823504103] [2021-01-06 17:37:34,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:37:34,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:34,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:37:34,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:37:34,173 INFO L87 Difference]: Start difference. First operand 219 states and 256 transitions. Second operand 13 states. [2021-01-06 17:37:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:34,573 INFO L93 Difference]: Finished difference Result 219 states and 256 transitions. [2021-01-06 17:37:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:37:34,573 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2021-01-06 17:37:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:34,573 INFO L225 Difference]: With dead ends: 219 [2021-01-06 17:37:34,573 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:37:34,574 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 [2021-01-06 17:37:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:37:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:37:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:37:34,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:37:34,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2021-01-06 17:37:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:34,575 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:37:34,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:37:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:37:34,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:37:34,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:37:34,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:37:35,297 WARN L197 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 169 [2021-01-06 17:37:35,807 WARN L197 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 169 [2021-01-06 17:37:36,066 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 156 [2021-01-06 17:37:36,259 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 139 [2021-01-06 17:37:36,570 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 166 [2021-01-06 17:37:36,815 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 155 [2021-01-06 17:37:38,087 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 157 DAG size of output: 68 [2021-01-06 17:37:39,588 WARN L197 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2021-01-06 17:37:40,678 WARN L197 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 149 DAG size of output: 58 [2021-01-06 17:37:41,644 WARN L197 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 78 [2021-01-06 17:37:42,622 WARN L197 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2021-01-06 17:37:44,315 WARN L197 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 160 DAG size of output: 66 [2021-01-06 17:37:45,457 WARN L197 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 149 DAG size of output: 68 [2021-01-06 17:37:45,462 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))) [2021-01-06 17:37:45,462 INFO L189 CegarLoopUtils]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2021-01-06 17:37:45,462 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-01-06 17:37:45,462 INFO L189 CegarLoopUtils]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-01-06 17:37:45,462 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)))) [2021-01-06 17:37:45,463 INFO L189 CegarLoopUtils]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-01-06 17:37:45,463 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))) [2021-01-06 17:37:45,463 INFO L189 CegarLoopUtils]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-01-06 17:37:45,463 INFO L189 CegarLoopUtils]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-01-06 17:37:45,463 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))) [2021-01-06 17:37:45,463 INFO L189 CegarLoopUtils]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-01-06 17:37:45,464 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))) [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:37:45,464 INFO L192 CegarLoopUtils]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-01-06 17:37:45,464 INFO L189 CegarLoopUtils]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-01-06 17:37:45,465 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-01-06 17:37:45,465 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-01-06 17:37:45,465 INFO L189 CegarLoopUtils]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-01-06 17:37:45,465 INFO L189 CegarLoopUtils]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-01-06 17:37:45,465 INFO L189 CegarLoopUtils]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-01-06 17:37:45,465 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:37:45,465 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-01-06 17:37:45,465 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)))) [2021-01-06 17:37:45,466 INFO L189 CegarLoopUtils]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-01-06 17:37:45,466 INFO L189 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2021-01-06 17:37:45,466 INFO L189 CegarLoopUtils]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-01-06 17:37:45,466 INFO L189 CegarLoopUtils]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-01-06 17:37:45,466 INFO L189 CegarLoopUtils]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-01-06 17:37:45,466 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:37:45,466 INFO L192 CegarLoopUtils]: At program point L75(lines 18 76) the Hoare annotation is: true [2021-01-06 17:37:45,467 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)))) [2021-01-06 17:37:45,467 INFO L189 CegarLoopUtils]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-01-06 17:37:45,467 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-01-06 17:37:45,467 INFO L189 CegarLoopUtils]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-01-06 17:37:45,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:37:45 BoogieIcfgContainer [2021-01-06 17:37:45,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:37:45,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:37:45,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:37:45,522 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:37:45,522 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:36:57" (3/4) ... [2021-01-06 17:37:45,526 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:37:45,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-01-06 17:37:45,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:37:45,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:37:45,541 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:37:45,601 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/egcd3-ll_valuebound2.c-witness.graphml [2021-01-06 17:37:45,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:37:45,603 INFO L168 Benchmark]: Toolchain (without parser) took 48741.65 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 125.2 MB in the beginning and 118.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 170.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:37:45,603 INFO L168 Benchmark]: CDTParser took 1.42 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:37:45,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 114.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:37:45,604 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.56 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:37:45,604 INFO L168 Benchmark]: Boogie Preprocessor took 44.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 112.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:37:45,605 INFO L168 Benchmark]: RCFGBuilder took 550.05 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 93.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:37:45,605 INFO L168 Benchmark]: TraceAbstraction took 47546.51 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 93.3 MB in the beginning and 123.6 MB in the end (delta: -30.3 MB). Peak memory consumption was 152.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:37:45,606 INFO L168 Benchmark]: Witness Printer took 80.04 ms. Allocated memory is still 314.6 MB. Free memory was 123.6 MB in the beginning and 118.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:37:45,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 439.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 114.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.56 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 112.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 550.05 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 93.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 47546.51 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 93.3 MB in the beginning and 123.6 MB in the end (delta: -30.3 MB). Peak memory consumption was 152.0 MB. Max. memory is 8.0 GB. * Witness Printer took 80.04 ms. Allocated memory is still 314.6 MB. Free memory was 123.6 MB in the beginning and 118.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 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: 36.7s, OverallIterations: 27, TraceHistogramMax: 6, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 969 SDtfs, 4509 SDslu, 3999 SDs, 0 SdLazy, 5307 SolverSat, 630 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 10.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1180 GetRequests, 759 SyntacticMatches, 4 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 11.9s 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: 1.0s 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, 8.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.1s 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...