/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_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:37:08,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:37:08,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:37:08,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:37:08,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:37:08,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:37:08,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:37:08,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:37:08,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:37:08,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:37:08,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:37:08,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:37:08,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:37:08,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:37:08,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:37:08,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:37:08,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:37:08,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:37:08,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:37:08,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:37:08,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:37:08,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:37:08,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:37:08,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:37:08,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:37:08,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:37:08,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:37:08,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:37:08,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:37:08,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:37:08,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:37:08,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:37:08,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:37:08,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:37:08,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:37:08,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:37:08,323 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 17:37:08,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:37:08,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:37:08,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:37:08,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:37:08,353 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:37:08,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:37:08,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:37:08,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:37:08,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:37:08,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:37:08,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:37:08,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:37:08,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:37:08,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:37:08,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:37:08,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:37:08,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:37:08,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:37:08,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:37:08,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:37:08,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:37:08,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:37:08,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:37:08,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:37:08,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:37:08,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:37:08,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:37:08,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:37:08,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:37:08,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:37:08,759 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:37:08,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound50.c [2021-01-06 17:37:08,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/263c4dc98/41d61e3751e24d548ebcc9e89654e46e/FLAG2964695eb [2021-01-06 17:37:09,433 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:37:09,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound50.c [2021-01-06 17:37:09,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/263c4dc98/41d61e3751e24d548ebcc9e89654e46e/FLAG2964695eb [2021-01-06 17:37:09,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/263c4dc98/41d61e3751e24d548ebcc9e89654e46e [2021-01-06 17:37:09,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:37:09,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:37:09,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:37:09,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:37:09,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:37:09,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:37:09" (1/1) ... [2021-01-06 17:37:09,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d243bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:09, skipping insertion in model container [2021-01-06 17:37:09,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:37:09" (1/1) ... [2021-01-06 17:37:09,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:37:09,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:37:10,013 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_valuebound50.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 17:37:10,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:37:10,050 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:37:10,065 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_valuebound50.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 17:37:10,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:37:10,096 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:37:10,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10 WrapperNode [2021-01-06 17:37:10,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:37:10,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:37:10,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:37:10,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:37:10,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:37:10,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:37:10,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:37:10,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:37:10,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (1/1) ... [2021-01-06 17:37:10,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:37:10,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:37:10,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:37:10,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:37:10,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (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 17:37:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:37:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:37:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:37:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:37:10,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:37:10,916 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-01-06 17:37:10,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:37:10 BoogieIcfgContainer [2021-01-06 17:37:10,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:37:10,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:37:10,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:37:10,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:37:10,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:37:09" (1/3) ... [2021-01-06 17:37:10,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b20de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:37:10, skipping insertion in model container [2021-01-06 17:37:10,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:10" (2/3) ... [2021-01-06 17:37:10,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b20de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:37:10, skipping insertion in model container [2021-01-06 17:37:10,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:37:10" (3/3) ... [2021-01-06 17:37:10,935 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound50.c [2021-01-06 17:37:10,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:37:10,948 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-01-06 17:37:10,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 17:37:11,024 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:37:11,024 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:37:11,024 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:37:11,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:37:11,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:37:11,025 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:37:11,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:37:11,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:37:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:37:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:37:11,058 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:11,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:11,060 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 17:37:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:11,068 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2021-01-06 17:37:11,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:11,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115966934] [2021-01-06 17:37:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:11,317 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 17:37:11,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115966934] [2021-01-06 17:37:11,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:11,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:37:11,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044398319] [2021-01-06 17:37:11,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:37:11,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:11,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:37:11,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:37:11,348 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:37:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:11,394 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2021-01-06 17:37:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:37:11,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-01-06 17:37:11,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:11,409 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:37:11,410 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:37:11,414 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 17:37:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:37:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:37:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:37:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-01-06 17:37:11,468 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2021-01-06 17:37:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:11,468 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-01-06 17:37:11,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:37:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-01-06 17:37:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:37:11,470 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:11,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:11,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:37:11,473 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 17:37:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:11,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2021-01-06 17:37:11,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:11,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004256268] [2021-01-06 17:37:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:11,522 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:11,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74744931] [2021-01-06 17:37:11,522 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 17:37:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:11,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:37:11,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:11,779 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 17:37:11,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004256268] [2021-01-06 17:37:11,780 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:11,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74744931] [2021-01-06 17:37:11,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:11,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:11,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208060067] [2021-01-06 17:37:11,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:11,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:11,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:11,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:11,799 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2021-01-06 17:37:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:11,980 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-01-06 17:37:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:37:11,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 17:37:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:11,983 INFO L225 Difference]: With dead ends: 64 [2021-01-06 17:37:11,983 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 17:37:11,984 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 17:37:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 17:37:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-01-06 17:37:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:37:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-01-06 17:37:11,993 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-01-06 17:37:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:11,994 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-01-06 17:37:11,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-01-06 17:37:11,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:37:11,995 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:11,995 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 17:37:12,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:37:12,210 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 17:37:12,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:12,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2021-01-06 17:37:12,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:12,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685320874] [2021-01-06 17:37:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:12,230 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:12,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893648991] [2021-01-06 17:37:12,231 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 17:37:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:12,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:37:12,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:12,555 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 17:37:12,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685320874] [2021-01-06 17:37:12,556 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:12,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893648991] [2021-01-06 17:37:12,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:12,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-06 17:37:12,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256718254] [2021-01-06 17:37:12,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:37:12,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:12,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:37:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:37:12,560 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 10 states. [2021-01-06 17:37:12,923 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2021-01-06 17:37:13,056 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2021-01-06 17:37:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:13,125 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-01-06 17:37:13,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:37:13,126 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2021-01-06 17:37:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:13,131 INFO L225 Difference]: With dead ends: 60 [2021-01-06 17:37:13,131 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 17:37:13,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:37:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 17:37:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-01-06 17:37:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 17:37:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-01-06 17:37:13,154 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-01-06 17:37:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:13,154 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-01-06 17:37:13,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:37:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-01-06 17:37:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:37:13,155 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:13,155 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 17:37:13,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:13,369 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 17:37:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:13,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2021-01-06 17:37:13,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:13,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704664987] [2021-01-06 17:37:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:13,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:13,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938891959] [2021-01-06 17:37:13,389 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 17:37:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:13,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:37:13,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:13,585 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 17:37:13,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704664987] [2021-01-06 17:37:13,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:13,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938891959] [2021-01-06 17:37:13,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:13,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:37:13,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707690931] [2021-01-06 17:37:13,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:37:13,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:13,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:37:13,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:37:13,588 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 8 states. [2021-01-06 17:37:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:13,940 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-01-06 17:37:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:37:13,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-06 17:37:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:13,944 INFO L225 Difference]: With dead ends: 58 [2021-01-06 17:37:13,944 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:37:13,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:37:13,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:37:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-01-06 17:37:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 17:37:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-01-06 17:37:13,969 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-01-06 17:37:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:13,969 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-01-06 17:37:13,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:37:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-01-06 17:37:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:37:13,971 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:13,971 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 17:37:14,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:14,185 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 17:37:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:14,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2021-01-06 17:37:14,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:14,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824035849] [2021-01-06 17:37:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:14,205 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:14,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600697625] [2021-01-06 17:37:14,205 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 17:37:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:14,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:37:14,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:14,348 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 17:37:14,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824035849] [2021-01-06 17:37:14,348 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:14,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600697625] [2021-01-06 17:37:14,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:14,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:37:14,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223258408] [2021-01-06 17:37:14,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:37:14,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:14,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:37:14,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:37:14,351 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2021-01-06 17:37:14,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:14,551 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-01-06 17:37:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:37:14,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-06 17:37:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:14,553 INFO L225 Difference]: With dead ends: 140 [2021-01-06 17:37:14,553 INFO L226 Difference]: Without dead ends: 136 [2021-01-06 17:37:14,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:37:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-06 17:37:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-01-06 17:37:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:37:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-01-06 17:37:14,568 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2021-01-06 17:37:14,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:14,569 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-01-06 17:37:14,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:37:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-01-06 17:37:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:37:14,570 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:14,570 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 17:37:14,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:14,786 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 17:37:14,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:14,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2021-01-06 17:37:14,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:14,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327485902] [2021-01-06 17:37:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:14,809 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:14,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527094297] [2021-01-06 17:37:14,809 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 17:37:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:14,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:37:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:14,976 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 17:37:14,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327485902] [2021-01-06 17:37:14,977 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:14,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527094297] [2021-01-06 17:37:14,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:14,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:37:14,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760964990] [2021-01-06 17:37:14,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:37:14,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:14,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:37:14,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:37:14,980 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 8 states. [2021-01-06 17:37:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:15,203 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-01-06 17:37:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:37:15,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-01-06 17:37:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:15,211 INFO L225 Difference]: With dead ends: 95 [2021-01-06 17:37:15,211 INFO L226 Difference]: Without dead ends: 93 [2021-01-06 17:37:15,213 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 17:37:15,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-06 17:37:15,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-01-06 17:37:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 17:37:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2021-01-06 17:37:15,249 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2021-01-06 17:37:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:15,251 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2021-01-06 17:37:15,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:37:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2021-01-06 17:37:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:15,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:37:15,470 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 17:37:15,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:15,471 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2021-01-06 17:37:15,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:15,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192972952] [2021-01-06 17:37:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:15,501 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:15,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60438103] [2021-01-06 17:37:15,502 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 17:37:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:15,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:37:15,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:15,737 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 17:37:15,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192972952] [2021-01-06 17:37:15,738 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:15,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60438103] [2021-01-06 17:37:15,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:15,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:37:15,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280763654] [2021-01-06 17:37:15,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:37:15,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:15,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:37:15,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:37:15,740 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 9 states. [2021-01-06 17:37:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:15,969 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2021-01-06 17:37:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:37:15,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-01-06 17:37:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:15,971 INFO L225 Difference]: With dead ends: 135 [2021-01-06 17:37:15,971 INFO L226 Difference]: Without dead ends: 133 [2021-01-06 17:37:15,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:37:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-06 17:37:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 116. [2021-01-06 17:37:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 17:37:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-01-06 17:37:15,990 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 22 [2021-01-06 17:37:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:15,991 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-01-06 17:37:15,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:37:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2021-01-06 17:37:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:37:15,992 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:15,992 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 17:37:16,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:16,208 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 17:37:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2021-01-06 17:37:16,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:16,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873582604] [2021-01-06 17:37:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:16,240 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:16,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814790009] [2021-01-06 17:37:16,241 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 17:37:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:16,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:37:16,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:16,350 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 17:37:16,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873582604] [2021-01-06 17:37:16,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:16,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814790009] [2021-01-06 17:37:16,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:16,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:16,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409332211] [2021-01-06 17:37:16,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:16,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:16,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:16,353 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand 5 states. [2021-01-06 17:37:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:16,498 INFO L93 Difference]: Finished difference Result 226 states and 287 transitions. [2021-01-06 17:37:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:37:16,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-01-06 17:37:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:16,502 INFO L225 Difference]: With dead ends: 226 [2021-01-06 17:37:16,502 INFO L226 Difference]: Without dead ends: 224 [2021-01-06 17:37:16,503 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 17:37:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-01-06 17:37:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2021-01-06 17:37:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-01-06 17:37:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 205 transitions. [2021-01-06 17:37:16,530 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 205 transitions. Word has length 23 [2021-01-06 17:37:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:16,530 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 205 transitions. [2021-01-06 17:37:16,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 205 transitions. [2021-01-06 17:37:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:37:16,531 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:16,532 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 17:37:16,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:16,746 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 17:37:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:16,747 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2021-01-06 17:37:16,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:16,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507190537] [2021-01-06 17:37:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:16,779 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:16,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568254497] [2021-01-06 17:37:16,780 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 17:37:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:16,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:37:16,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:17,005 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 17:37:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507190537] [2021-01-06 17:37:17,006 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568254497] [2021-01-06 17:37:17,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:17,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:37:17,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907397952] [2021-01-06 17:37:17,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:37:17,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:17,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:37:17,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:37:17,008 INFO L87 Difference]: Start difference. First operand 164 states and 205 transitions. Second operand 8 states. [2021-01-06 17:37:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:17,282 INFO L93 Difference]: Finished difference Result 179 states and 214 transitions. [2021-01-06 17:37:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:37:17,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2021-01-06 17:37:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:17,284 INFO L225 Difference]: With dead ends: 179 [2021-01-06 17:37:17,284 INFO L226 Difference]: Without dead ends: 177 [2021-01-06 17:37:17,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:37:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-01-06 17:37:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2021-01-06 17:37:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-01-06 17:37:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 203 transitions. [2021-01-06 17:37:17,310 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 203 transitions. Word has length 24 [2021-01-06 17:37:17,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:17,310 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 203 transitions. [2021-01-06 17:37:17,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:37:17,311 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 203 transitions. [2021-01-06 17:37:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:37:17,313 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:17,313 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 17:37:17,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:37:17,527 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 17:37:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:17,528 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2021-01-06 17:37:17,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:17,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501932620] [2021-01-06 17:37:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:17,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:17,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225001452] [2021-01-06 17:37:17,541 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 17:37:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:17,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:37:17,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:17,745 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 17:37:17,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501932620] [2021-01-06 17:37:17,746 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:17,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225001452] [2021-01-06 17:37:17,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:17,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:37:17,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175321428] [2021-01-06 17:37:17,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:37:17,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:17,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:37:17,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:37:17,748 INFO L87 Difference]: Start difference. First operand 164 states and 203 transitions. Second operand 11 states. [2021-01-06 17:37:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:18,181 INFO L93 Difference]: Finished difference Result 277 states and 328 transitions. [2021-01-06 17:37:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:37:18,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2021-01-06 17:37:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:18,183 INFO L225 Difference]: With dead ends: 277 [2021-01-06 17:37:18,183 INFO L226 Difference]: Without dead ends: 275 [2021-01-06 17:37:18,184 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 17:37:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-01-06 17:37:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 198. [2021-01-06 17:37:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-01-06 17:37:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2021-01-06 17:37:18,217 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 26 [2021-01-06 17:37:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:18,217 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2021-01-06 17:37:18,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:37:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2021-01-06 17:37:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:37:18,221 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:18,222 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 17:37:18,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:18,438 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 17:37:18,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2021-01-06 17:37:18,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:18,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724123838] [2021-01-06 17:37:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:18,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:18,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989749701] [2021-01-06 17:37:18,454 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 17:37:18,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:18,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:18,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:37:18,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:18,563 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 17:37:18,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724123838] [2021-01-06 17:37:18,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:18,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989749701] [2021-01-06 17:37:18,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:18,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:18,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931550903] [2021-01-06 17:37:18,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:18,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:18,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:18,567 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand 5 states. [2021-01-06 17:37:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:18,678 INFO L93 Difference]: Finished difference Result 291 states and 355 transitions. [2021-01-06 17:37:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:37:18,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2021-01-06 17:37:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:18,680 INFO L225 Difference]: With dead ends: 291 [2021-01-06 17:37:18,681 INFO L226 Difference]: Without dead ends: 209 [2021-01-06 17:37:18,682 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 17:37:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-01-06 17:37:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 155. [2021-01-06 17:37:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2021-01-06 17:37:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2021-01-06 17:37:18,705 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 27 [2021-01-06 17:37:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:18,705 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2021-01-06 17:37:18,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2021-01-06 17:37:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:37:18,707 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:18,707 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 17:37:18,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:18,922 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 17:37:18,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:18,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2021-01-06 17:37:18,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:18,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209230613] [2021-01-06 17:37:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:18,938 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:18,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907786013] [2021-01-06 17:37:18,938 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 17:37:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:19,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-06 17:37:19,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:19,395 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 17:37:19,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209230613] [2021-01-06 17:37:19,396 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:19,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907786013] [2021-01-06 17:37:19,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:19,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:37:19,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693110728] [2021-01-06 17:37:19,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:37:19,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:19,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:37:19,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:37:19,401 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand 13 states. [2021-01-06 17:37:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:20,114 INFO L93 Difference]: Finished difference Result 282 states and 333 transitions. [2021-01-06 17:37:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:37:20,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2021-01-06 17:37:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:20,116 INFO L225 Difference]: With dead ends: 282 [2021-01-06 17:37:20,116 INFO L226 Difference]: Without dead ends: 198 [2021-01-06 17:37:20,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:37:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-01-06 17:37:20,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 164. [2021-01-06 17:37:20,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-01-06 17:37:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2021-01-06 17:37:20,140 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 32 [2021-01-06 17:37:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:20,141 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2021-01-06 17:37:20,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:37:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2021-01-06 17:37:20,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:37:20,142 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:20,142 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 17:37:20,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:37:20,356 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 17:37:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2021-01-06 17:37:20,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:20,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516666053] [2021-01-06 17:37:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:20,369 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:20,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99064107] [2021-01-06 17:37:20,370 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 17:37:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:20,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:37:20,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:20,572 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 17:37:20,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516666053] [2021-01-06 17:37:20,573 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:20,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99064107] [2021-01-06 17:37:20,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:20,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:37:20,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375385649] [2021-01-06 17:37:20,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:37:20,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:37:20,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:37:20,576 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 9 states. [2021-01-06 17:37:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:21,035 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2021-01-06 17:37:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:37:21,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-01-06 17:37:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:21,037 INFO L225 Difference]: With dead ends: 211 [2021-01-06 17:37:21,037 INFO L226 Difference]: Without dead ends: 209 [2021-01-06 17:37:21,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:37:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-01-06 17:37:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 181. [2021-01-06 17:37:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-01-06 17:37:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 212 transitions. [2021-01-06 17:37:21,061 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 212 transitions. Word has length 32 [2021-01-06 17:37:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:21,061 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 212 transitions. [2021-01-06 17:37:21,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:37:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 212 transitions. [2021-01-06 17:37:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:37:21,062 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:21,062 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 17:37:21,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:37:21,278 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 17:37:21,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:21,279 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2021-01-06 17:37:21,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:21,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881407979] [2021-01-06 17:37:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:21,293 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:21,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709006623] [2021-01-06 17:37:21,293 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 17:37:21,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:21,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:21,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:37:21,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:21,456 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 17:37:21,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881407979] [2021-01-06 17:37:21,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:21,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709006623] [2021-01-06 17:37:21,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:21,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:37:21,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254495272] [2021-01-06 17:37:21,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:37:21,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:37:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:37:21,459 INFO L87 Difference]: Start difference. First operand 181 states and 212 transitions. Second operand 8 states. [2021-01-06 17:37:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:21,868 INFO L93 Difference]: Finished difference Result 402 states and 471 transitions. [2021-01-06 17:37:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:37:21,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2021-01-06 17:37:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:21,871 INFO L225 Difference]: With dead ends: 402 [2021-01-06 17:37:21,872 INFO L226 Difference]: Without dead ends: 398 [2021-01-06 17:37:21,872 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 17:37:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-01-06 17:37:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 221. [2021-01-06 17:37:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-01-06 17:37:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 265 transitions. [2021-01-06 17:37:21,908 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 265 transitions. Word has length 37 [2021-01-06 17:37:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:21,908 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 265 transitions. [2021-01-06 17:37:21,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:37:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 265 transitions. [2021-01-06 17:37:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:37:21,909 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:21,909 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 17:37:22,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:37:22,123 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 17:37:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2021-01-06 17:37:22,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:22,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92896237] [2021-01-06 17:37:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:22,140 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:22,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222778441] [2021-01-06 17:37:22,141 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 17:37:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:22,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:37:22,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:22,394 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 17:37:22,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92896237] [2021-01-06 17:37:22,394 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:22,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222778441] [2021-01-06 17:37:22,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:22,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:37:22,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641961196] [2021-01-06 17:37:22,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:37:22,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:22,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:37:22,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:37:22,396 INFO L87 Difference]: Start difference. First operand 221 states and 265 transitions. Second operand 12 states. [2021-01-06 17:37:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:23,113 INFO L93 Difference]: Finished difference Result 363 states and 428 transitions. [2021-01-06 17:37:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 17:37:23,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2021-01-06 17:37:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:23,116 INFO L225 Difference]: With dead ends: 363 [2021-01-06 17:37:23,116 INFO L226 Difference]: Without dead ends: 361 [2021-01-06 17:37:23,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2021-01-06 17:37:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-01-06 17:37:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 261. [2021-01-06 17:37:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-01-06 17:37:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 313 transitions. [2021-01-06 17:37:23,162 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 313 transitions. Word has length 37 [2021-01-06 17:37:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:23,162 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 313 transitions. [2021-01-06 17:37:23,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:37:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 313 transitions. [2021-01-06 17:37:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:37:23,163 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:23,163 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 17:37:23,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:23,379 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 17:37:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:23,380 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2021-01-06 17:37:23,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:23,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640715129] [2021-01-06 17:37:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:23,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:23,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740909243] [2021-01-06 17:37:23,404 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 17:37:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:23,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:37:23,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:23,528 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 17:37:23,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640715129] [2021-01-06 17:37:23,529 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:23,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740909243] [2021-01-06 17:37:23,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:23,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:23,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690269232] [2021-01-06 17:37:23,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:23,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:23,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:23,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:23,533 INFO L87 Difference]: Start difference. First operand 261 states and 313 transitions. Second operand 5 states. [2021-01-06 17:37:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:23,625 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2021-01-06 17:37:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:37:23,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-01-06 17:37:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:23,628 INFO L225 Difference]: With dead ends: 454 [2021-01-06 17:37:23,629 INFO L226 Difference]: Without dead ends: 287 [2021-01-06 17:37:23,633 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 17:37:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-01-06 17:37:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2021-01-06 17:37:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-01-06 17:37:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 312 transitions. [2021-01-06 17:37:23,670 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 312 transitions. Word has length 38 [2021-01-06 17:37:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:23,670 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 312 transitions. [2021-01-06 17:37:23,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 312 transitions. [2021-01-06 17:37:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:37:23,672 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:23,672 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 17:37:23,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:37:23,886 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 17:37:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2021-01-06 17:37:23,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:23,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416381581] [2021-01-06 17:37:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:23,898 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:23,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787128671] [2021-01-06 17:37:23,899 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 17:37:23,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:37:23,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:23,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 17:37:23,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:24,018 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 17:37:24,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416381581] [2021-01-06 17:37:24,019 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:24,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787128671] [2021-01-06 17:37:24,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:24,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:37:24,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702928400] [2021-01-06 17:37:24,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:37:24,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:24,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:37:24,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:37:24,021 INFO L87 Difference]: Start difference. First operand 261 states and 312 transitions. Second operand 5 states. [2021-01-06 17:37:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:24,147 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2021-01-06 17:37:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:37:24,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-01-06 17:37:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:24,149 INFO L225 Difference]: With dead ends: 301 [2021-01-06 17:37:24,149 INFO L226 Difference]: Without dead ends: 299 [2021-01-06 17:37:24,150 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 17:37:24,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-01-06 17:37:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 288. [2021-01-06 17:37:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2021-01-06 17:37:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 345 transitions. [2021-01-06 17:37:24,190 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 345 transitions. Word has length 38 [2021-01-06 17:37:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:24,190 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 345 transitions. [2021-01-06 17:37:24,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:37:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 345 transitions. [2021-01-06 17:37:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:37:24,191 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:24,191 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 17:37:24,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:37:24,406 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 17:37:24,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:24,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2021-01-06 17:37:24,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:24,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608986691] [2021-01-06 17:37:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:24,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:24,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196240340] [2021-01-06 17:37:24,424 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 17:37:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:24,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:37:24,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:24,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608986691] [2021-01-06 17:37:24,870 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:24,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196240340] [2021-01-06 17:37:24,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:24,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:37:24,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46987223] [2021-01-06 17:37:24,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:37:24,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:24,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:37:24,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:37:24,872 INFO L87 Difference]: Start difference. First operand 288 states and 345 transitions. Second operand 15 states. [2021-01-06 17:37:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:27,505 INFO L93 Difference]: Finished difference Result 450 states and 519 transitions. [2021-01-06 17:37:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-06 17:37:27,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2021-01-06 17:37:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:27,507 INFO L225 Difference]: With dead ends: 450 [2021-01-06 17:37:27,507 INFO L226 Difference]: Without dead ends: 448 [2021-01-06 17:37:27,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=578, Invalid=2178, Unknown=0, NotChecked=0, Total=2756 [2021-01-06 17:37:27,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-01-06 17:37:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 382. [2021-01-06 17:37:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2021-01-06 17:37:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 470 transitions. [2021-01-06 17:37:27,568 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 470 transitions. Word has length 39 [2021-01-06 17:37:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:27,568 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 470 transitions. [2021-01-06 17:37:27,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:37:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 470 transitions. [2021-01-06 17:37:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:37:27,569 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:27,569 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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 17:37:27,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:37:27,785 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 17:37:27,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:27,786 INFO L82 PathProgramCache]: Analyzing trace with hash 274679198, now seen corresponding path program 1 times [2021-01-06 17:37:27,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:27,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480986440] [2021-01-06 17:37:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:27,797 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:27,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195636633] [2021-01-06 17:37:27,797 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 17:37:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:27,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 81 conjunts are in the unsatisfiable core [2021-01-06 17:37:27,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:28,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480986440] [2021-01-06 17:37:28,633 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:28,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195636633] [2021-01-06 17:37:28,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:28,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-01-06 17:37:28,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486420571] [2021-01-06 17:37:28,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 17:37:28,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:28,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 17:37:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:37:28,637 INFO L87 Difference]: Start difference. First operand 382 states and 470 transitions. Second operand 18 states. [2021-01-06 17:37:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:30,144 INFO L93 Difference]: Finished difference Result 461 states and 553 transitions. [2021-01-06 17:37:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 17:37:30,145 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2021-01-06 17:37:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:30,147 INFO L225 Difference]: With dead ends: 461 [2021-01-06 17:37:30,148 INFO L226 Difference]: Without dead ends: 459 [2021-01-06 17:37:30,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2021-01-06 17:37:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-01-06 17:37:30,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 429. [2021-01-06 17:37:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-01-06 17:37:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 526 transitions. [2021-01-06 17:37:30,224 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 526 transitions. Word has length 41 [2021-01-06 17:37:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:30,224 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 526 transitions. [2021-01-06 17:37:30,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 17:37:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 526 transitions. [2021-01-06 17:37:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:37:30,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:30,225 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 17:37:30,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:30,441 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 17:37:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:30,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2021-01-06 17:37:30,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:30,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715316313] [2021-01-06 17:37:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:30,461 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:30,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530817967] [2021-01-06 17:37:30,462 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 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 17:37:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:30,528 WARN L261 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 84 conjunts are in the unsatisfiable core [2021-01-06 17:37:30,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:31,520 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 17:37:31,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715316313] [2021-01-06 17:37:31,521 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:31,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530817967] [2021-01-06 17:37:31,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:31,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-01-06 17:37:31,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90042946] [2021-01-06 17:37:31,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 17:37:31,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:31,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 17:37:31,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:37:31,522 INFO L87 Difference]: Start difference. First operand 429 states and 526 transitions. Second operand 19 states. [2021-01-06 17:37:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:32,943 INFO L93 Difference]: Finished difference Result 535 states and 645 transitions. [2021-01-06 17:37:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 17:37:32,944 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2021-01-06 17:37:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:32,946 INFO L225 Difference]: With dead ends: 535 [2021-01-06 17:37:32,946 INFO L226 Difference]: Without dead ends: 527 [2021-01-06 17:37:32,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2021-01-06 17:37:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-01-06 17:37:33,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 450. [2021-01-06 17:37:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2021-01-06 17:37:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 550 transitions. [2021-01-06 17:37:33,018 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 550 transitions. Word has length 41 [2021-01-06 17:37:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:33,018 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 550 transitions. [2021-01-06 17:37:33,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 17:37:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 550 transitions. [2021-01-06 17:37:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:37:33,019 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:33,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:33,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:33,233 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 17:37:33,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:33,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1278543847, now seen corresponding path program 2 times [2021-01-06 17:37:33,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:33,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110819957] [2021-01-06 17:37:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:33,244 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:33,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918772362] [2021-01-06 17:37:33,244 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 17:37:33,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:33,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:33,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 17:37:33,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:33,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110819957] [2021-01-06 17:37:33,479 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:33,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918772362] [2021-01-06 17:37:33,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:33,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:37:33,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482268112] [2021-01-06 17:37:33,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:37:33,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:33,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:37:33,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:37:33,481 INFO L87 Difference]: Start difference. First operand 450 states and 550 transitions. Second operand 11 states. [2021-01-06 17:37:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:34,271 INFO L93 Difference]: Finished difference Result 501 states and 605 transitions. [2021-01-06 17:37:34,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:37:34,272 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2021-01-06 17:37:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:34,274 INFO L225 Difference]: With dead ends: 501 [2021-01-06 17:37:34,274 INFO L226 Difference]: Without dead ends: 499 [2021-01-06 17:37:34,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:37:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-01-06 17:37:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 468. [2021-01-06 17:37:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2021-01-06 17:37:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 571 transitions. [2021-01-06 17:37:34,356 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 571 transitions. Word has length 41 [2021-01-06 17:37:34,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:34,357 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 571 transitions. [2021-01-06 17:37:34,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:37:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 571 transitions. [2021-01-06 17:37:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:37:34,357 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:34,358 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 17:37:34,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 17:37:34,572 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 17:37:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:34,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2021-01-06 17:37:34,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:34,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316299195] [2021-01-06 17:37:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:34,587 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:34,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764201803] [2021-01-06 17:37:34,587 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 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 17:37:34,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:34,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:34,661 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 93 conjunts are in the unsatisfiable core [2021-01-06 17:37:34,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:35,323 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 17:37:35,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316299195] [2021-01-06 17:37:35,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:35,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764201803] [2021-01-06 17:37:35,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:35,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:37:35,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204897706] [2021-01-06 17:37:35,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:37:35,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:35,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:37:35,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:37:35,325 INFO L87 Difference]: Start difference. First operand 468 states and 571 transitions. Second operand 17 states. [2021-01-06 17:37:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:36,901 INFO L93 Difference]: Finished difference Result 604 states and 722 transitions. [2021-01-06 17:37:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 17:37:36,904 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2021-01-06 17:37:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:36,907 INFO L225 Difference]: With dead ends: 604 [2021-01-06 17:37:36,907 INFO L226 Difference]: Without dead ends: 594 [2021-01-06 17:37:36,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 17:37:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-01-06 17:37:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 489. [2021-01-06 17:37:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2021-01-06 17:37:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 595 transitions. [2021-01-06 17:37:37,000 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 595 transitions. Word has length 46 [2021-01-06 17:37:37,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:37,000 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 595 transitions. [2021-01-06 17:37:37,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:37:37,001 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 595 transitions. [2021-01-06 17:37:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:37:37,001 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:37,001 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 17:37:37,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:37:37,215 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 17:37:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:37,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2021-01-06 17:37:37,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:37,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428570405] [2021-01-06 17:37:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:37,237 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:37,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869678811] [2021-01-06 17:37:37,237 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 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 17:37:37,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:37:37,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:37,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-06 17:37:37,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:37,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428570405] [2021-01-06 17:37:37,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:37,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869678811] [2021-01-06 17:37:37,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:37,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:37:37,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795827852] [2021-01-06 17:37:37,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:37:37,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:37:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:37:37,703 INFO L87 Difference]: Start difference. First operand 489 states and 595 transitions. Second operand 17 states. [2021-01-06 17:37:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:45,003 INFO L93 Difference]: Finished difference Result 633 states and 755 transitions. [2021-01-06 17:37:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 17:37:45,004 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2021-01-06 17:37:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:45,008 INFO L225 Difference]: With dead ends: 633 [2021-01-06 17:37:45,008 INFO L226 Difference]: Without dead ends: 629 [2021-01-06 17:37:45,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 17:37:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-01-06 17:37:45,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 507. [2021-01-06 17:37:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2021-01-06 17:37:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 615 transitions. [2021-01-06 17:37:45,105 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 615 transitions. Word has length 46 [2021-01-06 17:37:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:45,106 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 615 transitions. [2021-01-06 17:37:45,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:37:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 615 transitions. [2021-01-06 17:37:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 17:37:45,107 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:45,107 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 17:37:45,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:45,320 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 17:37:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:45,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2021-01-06 17:37:45,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:45,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779952604] [2021-01-06 17:37:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:45,338 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:45,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133784934] [2021-01-06 17:37:45,339 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 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 17:37:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:45,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:37:45,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:37:45,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779952604] [2021-01-06 17:37:45,654 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:45,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133784934] [2021-01-06 17:37:45,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:45,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:37:45,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007035180] [2021-01-06 17:37:45,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:37:45,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:45,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:37:45,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:37:45,655 INFO L87 Difference]: Start difference. First operand 507 states and 615 transitions. Second operand 13 states. [2021-01-06 17:37:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:46,699 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2021-01-06 17:37:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 17:37:46,699 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2021-01-06 17:37:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:46,702 INFO L225 Difference]: With dead ends: 723 [2021-01-06 17:37:46,702 INFO L226 Difference]: Without dead ends: 721 [2021-01-06 17:37:46,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 17:37:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-01-06 17:37:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 603. [2021-01-06 17:37:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2021-01-06 17:37:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 729 transitions. [2021-01-06 17:37:46,816 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 729 transitions. Word has length 49 [2021-01-06 17:37:46,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:46,816 INFO L481 AbstractCegarLoop]: Abstraction has 603 states and 729 transitions. [2021-01-06 17:37:46,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:37:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 729 transitions. [2021-01-06 17:37:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 17:37:46,818 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:46,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-01-06 17:37:47,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 17:37:47,032 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 17:37:47,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:47,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1323606593, now seen corresponding path program 3 times [2021-01-06 17:37:47,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:47,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707497770] [2021-01-06 17:37:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:47,042 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:47,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879069489] [2021-01-06 17:37:47,042 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 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 17:37:47,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:37:47,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:47,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 63 conjunts are in the unsatisfiable core [2021-01-06 17:37:47,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 17:37:47,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707497770] [2021-01-06 17:37:47,466 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:47,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879069489] [2021-01-06 17:37:47,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:47,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:37:47,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399653354] [2021-01-06 17:37:47,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:37:47,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:47,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:37:47,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:37:47,468 INFO L87 Difference]: Start difference. First operand 603 states and 729 transitions. Second operand 12 states. [2021-01-06 17:37:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:52,378 INFO L93 Difference]: Finished difference Result 752 states and 897 transitions. [2021-01-06 17:37:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:37:52,380 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2021-01-06 17:37:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:52,382 INFO L225 Difference]: With dead ends: 752 [2021-01-06 17:37:52,382 INFO L226 Difference]: Without dead ends: 744 [2021-01-06 17:37:52,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:37:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-01-06 17:37:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 620. [2021-01-06 17:37:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2021-01-06 17:37:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 748 transitions. [2021-01-06 17:37:52,499 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 748 transitions. Word has length 50 [2021-01-06 17:37:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:52,500 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 748 transitions. [2021-01-06 17:37:52,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:37:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 748 transitions. [2021-01-06 17:37:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 17:37:52,501 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:52,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:52,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:37:52,713 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 17:37:52,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1449773808, now seen corresponding path program 3 times [2021-01-06 17:37:52,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:52,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459760866] [2021-01-06 17:37:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:52,721 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:52,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999930525] [2021-01-06 17:37:52,722 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 17:37:52,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:37:52,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:37:52,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 17:37:52,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-06 17:37:55,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459760866] [2021-01-06 17:37:55,116 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:55,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999930525] [2021-01-06 17:37:55,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:37:55,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:37:55,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390758989] [2021-01-06 17:37:55,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:37:55,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:55,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:37:55,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2021-01-06 17:37:55,122 INFO L87 Difference]: Start difference. First operand 620 states and 748 transitions. Second operand 8 states. [2021-01-06 17:39:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:38,711 INFO L93 Difference]: Finished difference Result 630 states and 753 transitions. [2021-01-06 17:39:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:39:38,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2021-01-06 17:39:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:38,731 INFO L225 Difference]: With dead ends: 630 [2021-01-06 17:39:38,731 INFO L226 Difference]: Without dead ends: 628 [2021-01-06 17:39:38,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 40.0s TimeCoverageRelationStatistics Valid=73, Invalid=180, Unknown=19, NotChecked=0, Total=272 [2021-01-06 17:39:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-01-06 17:39:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 443. [2021-01-06 17:39:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2021-01-06 17:39:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 529 transitions. [2021-01-06 17:39:38,817 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 529 transitions. Word has length 50 [2021-01-06 17:39:38,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:38,818 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 529 transitions. [2021-01-06 17:39:38,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:39:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 529 transitions. [2021-01-06 17:39:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 17:39:38,819 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:38,819 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2021-01-06 17:39:39,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-06 17:39:39,022 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 17:39:39,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:39,023 INFO L82 PathProgramCache]: Analyzing trace with hash 272025232, now seen corresponding path program 2 times [2021-01-06 17:39:39,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:39,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611928894] [2021-01-06 17:39:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:39,034 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:39,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138260142] [2021-01-06 17:39:39,035 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 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 17:39:39,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:39:39,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:39:39,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:39:39,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:39,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611928894] [2021-01-06 17:39:39,750 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:39,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138260142] [2021-01-06 17:39:39,751 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:39:39,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:39:39,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:39:39,751 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:39:39,751 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:39:39,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:39:39,992 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:39:39,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:39:39 BoogieIcfgContainer [2021-01-06 17:39:39,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:39:39,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:39:39,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:39:39,993 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:39:39,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:37:10" (3/4) ... [2021-01-06 17:39:39,997 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:39:39,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:39:39,999 INFO L168 Benchmark]: Toolchain (without parser) took 150177.07 ms. Allocated memory was 172.0 MB in the beginning and 385.9 MB in the end (delta: 213.9 MB). Free memory was 146.9 MB in the beginning and 148.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 213.3 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:39,999 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 144.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:39:40,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.64 ms. Allocated memory is still 172.0 MB. Free memory was 146.7 MB in the beginning and 136.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:40,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 172.0 MB. Free memory was 136.1 MB in the beginning and 134.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:40,001 INFO L168 Benchmark]: Boogie Preprocessor took 28.41 ms. Allocated memory is still 172.0 MB. Free memory was 134.5 MB in the beginning and 133.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:40,001 INFO L168 Benchmark]: RCFGBuilder took 743.29 ms. Allocated memory is still 172.0 MB. Free memory was 133.2 MB in the beginning and 150.2 MB in the end (delta: -16.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:40,002 INFO L168 Benchmark]: TraceAbstraction took 149071.79 ms. Allocated memory was 172.0 MB in the beginning and 385.9 MB in the end (delta: 213.9 MB). Free memory was 149.6 MB in the beginning and 148.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 215.3 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:40,002 INFO L168 Benchmark]: Witness Printer took 4.39 ms. Allocated memory is still 385.9 MB. Free memory is still 148.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:39:40,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 144.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.64 ms. Allocated memory is still 172.0 MB. Free memory was 146.7 MB in the beginning and 136.3 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 45.96 ms. Allocated memory is still 172.0 MB. Free memory was 136.1 MB in the beginning and 134.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.41 ms. Allocated memory is still 172.0 MB. Free memory was 134.5 MB in the beginning and 133.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 743.29 ms. Allocated memory is still 172.0 MB. Free memory was 133.2 MB in the beginning and 150.2 MB in the end (delta: -16.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 149071.79 ms. Allocated memory was 172.0 MB in the beginning and 385.9 MB in the end (delta: 213.9 MB). Free memory was 149.6 MB in the beginning and 148.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 215.3 MB. Max. memory is 8.0 GB. * Witness Printer took 4.39 ms. Allocated memory is still 385.9 MB. Free memory is still 148.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int x, y; [L20] long long a, b, p, q, r, s; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 148.9s, OverallIterations: 27, TraceHistogramMax: 5, AutomataDifference: 130.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 992 SDtfs, 4123 SDslu, 4169 SDs, 0 SdLazy, 5906 SolverSat, 710 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 80.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1074 GetRequests, 622 SyntacticMatches, 4 SemanticMatches, 448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 52.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=620occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 1558 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 845 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 819 ConstructedInterpolants, 0 QuantifiedInterpolants, 337378 SizeOfPredicates, 320 NumberOfNonLiveVariables, 3338 ConjunctsInSsa, 824 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 86/340 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...