/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/egcd2-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:38:56,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:38:56,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:38:56,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:38:56,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:38:56,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:38:56,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:38:56,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:38:56,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:38:56,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:38:56,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:38:56,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:38:56,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:38:56,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:38:56,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:38:56,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:38:56,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:38:56,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:38:56,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:38:56,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:38:56,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:38:56,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:38:56,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:38:56,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:38:56,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:38:56,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:38:56,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:38:56,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:38:56,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:38:56,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:38:56,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:38:56,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:38:56,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:38:56,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:38:56,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:38:56,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:38:56,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:38:56,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:38:56,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:38:56,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:38:56,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:38:56,286 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:38:56,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:38:56,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:38:56,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:38:56,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:38:56,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:38:56,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:38:56,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:38:56,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:38:56,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:38:56,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:38:56,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:38:56,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:38:56,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:38:56,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:38:56,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:38:56,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:38:56,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:38:56,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:38:56,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:38:56,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:38:56,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:38:56,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:38:56,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:38:56,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:38:56,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:38:56,673 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:38:56,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2020-12-23 07:38:56,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ba655826c/61d8e5f65a2f4fab83ec662eef88a686/FLAGe476c7d69 [2020-12-23 07:38:57,429 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:38:57,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2020-12-23 07:38:57,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ba655826c/61d8e5f65a2f4fab83ec662eef88a686/FLAGe476c7d69 [2020-12-23 07:38:57,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ba655826c/61d8e5f65a2f4fab83ec662eef88a686 [2020-12-23 07:38:57,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:38:57,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:38:57,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:38:57,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:38:57,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:38:57,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:38:57" (1/1) ... [2020-12-23 07:38:57,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe04eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:57, skipping insertion in model container [2020-12-23 07:38:57,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:38:57" (1/1) ... [2020-12-23 07:38:57,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:38:57,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:38:57,956 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/egcd2-ll_valuebound100.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[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~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[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:38:57,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:38:57,994 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:38:58,008 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/egcd2-ll_valuebound100.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[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~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[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:38:58,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:38:58,037 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:38:58,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58 WrapperNode [2020-12-23 07:38:58,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:38:58,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:38:58,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:38:58,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:38:58,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:38:58,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:38:58,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:38:58,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:38:58,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:38:58,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:38:58,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:38:58,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:38:58,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:38:58,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:38:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:38:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:38:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:38:58,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:38:58,622 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-23 07:38:58,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:38:58 BoogieIcfgContainer [2020-12-23 07:38:58,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:38:58,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:38:58,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:38:58,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:38:58,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:38:57" (1/3) ... [2020-12-23 07:38:58,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6babad30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:38:58, skipping insertion in model container [2020-12-23 07:38:58,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (2/3) ... [2020-12-23 07:38:58,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6babad30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:38:58, skipping insertion in model container [2020-12-23 07:38:58,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:38:58" (3/3) ... [2020-12-23 07:38:58,645 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound100.c [2020-12-23 07:38:58,662 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:38:58,674 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 07:38:58,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 07:38:58,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:38:58,760 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:38:58,760 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:38:58,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:38:58,762 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:38:58,762 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:38:58,762 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:38:58,762 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:38:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-12-23 07:38:58,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:38:58,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:58,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:58,799 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:58,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:58,807 INFO L82 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2020-12-23 07:38:58,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:58,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643143931] [2020-12-23 07:38:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:59,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643143931] [2020-12-23 07:38:59,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:59,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:38:59,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011043625] [2020-12-23 07:38:59,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:38:59,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:59,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:38:59,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:38:59,080 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-12-23 07:38:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:59,122 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2020-12-23 07:38:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:38:59,125 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-12-23 07:38:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:59,138 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:38:59,138 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:38:59,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:38:59,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:38:59,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 07:38:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:38:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-12-23 07:38:59,191 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2020-12-23 07:38:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:59,191 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-12-23 07:38:59,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:38:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-12-23 07:38:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:38:59,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:59,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:59,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:38:59,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:59,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2020-12-23 07:38:59,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:59,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936229277] [2020-12-23 07:38:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:59,245 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:59,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003590123] [2020-12-23 07:38:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:59,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:38:59,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:59,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936229277] [2020-12-23 07:38:59,443 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:59,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003590123] [2020-12-23 07:38:59,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:59,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:38:59,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297508859] [2020-12-23 07:38:59,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:38:59,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:59,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:38:59,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:38:59,447 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 5 states. [2020-12-23 07:38:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:59,557 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-12-23 07:38:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:38:59,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:38:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:59,560 INFO L225 Difference]: With dead ends: 69 [2020-12-23 07:38:59,560 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:38:59,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:38:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:38:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-12-23 07:38:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 07:38:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-23 07:38:59,570 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2020-12-23 07:38:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:59,571 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-23 07:38:59,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:38:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-23 07:38:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:38:59,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:59,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:59,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:38:59,787 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:59,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2020-12-23 07:38:59,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:59,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727705184] [2020-12-23 07:38:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:59,807 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:59,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237674149] [2020-12-23 07:38:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:59,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:38:59,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:00,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727705184] [2020-12-23 07:39:00,009 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:00,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237674149] [2020-12-23 07:39:00,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:00,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:39:00,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506793580] [2020-12-23 07:39:00,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:39:00,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:00,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:39:00,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:39:00,012 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 8 states. [2020-12-23 07:39:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:00,271 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2020-12-23 07:39:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:39:00,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-23 07:39:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:00,273 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:39:00,273 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 07:39:00,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 07:39:00,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2020-12-23 07:39:00,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:39:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-12-23 07:39:00,290 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2020-12-23 07:39:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:00,291 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-12-23 07:39:00,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:39:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-12-23 07:39:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:39:00,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:00,294 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] [2020-12-23 07:39:00,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:00,511 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:00,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:00,512 INFO L82 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2020-12-23 07:39:00,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:00,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178357432] [2020-12-23 07:39:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:00,529 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:00,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151923397] [2020-12-23 07:39:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:00,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:39:00,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:00,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178357432] [2020-12-23 07:39:00,780 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:00,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151923397] [2020-12-23 07:39:00,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:00,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 07:39:00,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709495519] [2020-12-23 07:39:00,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:39:00,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:00,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:39:00,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:00,783 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2020-12-23 07:39:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:01,079 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-12-23 07:39:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:39:01,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-23 07:39:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:01,081 INFO L225 Difference]: With dead ends: 63 [2020-12-23 07:39:01,081 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:39:01,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:39:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:39:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-12-23 07:39:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:39:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-23 07:39:01,091 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2020-12-23 07:39:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:01,092 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-23 07:39:01,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:39:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-23 07:39:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:39:01,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:01,093 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] [2020-12-23 07:39:01,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:01,309 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:01,311 INFO L82 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2020-12-23 07:39:01,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:01,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820221331] [2020-12-23 07:39:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:01,331 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:01,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830924291] [2020-12-23 07:39:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:01,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:39:01,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:01,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820221331] [2020-12-23 07:39:01,518 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:01,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830924291] [2020-12-23 07:39:01,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:01,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:39:01,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125489133] [2020-12-23 07:39:01,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:39:01,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:01,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:39:01,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:39:01,521 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 8 states. [2020-12-23 07:39:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:01,699 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-12-23 07:39:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:39:01,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-23 07:39:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:01,701 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:39:01,701 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:39:01,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:39:01,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:39:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-12-23 07:39:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:39:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-23 07:39:01,710 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2020-12-23 07:39:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:01,711 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-23 07:39:01,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:39:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-23 07:39:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:39:01,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:01,712 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, 1] [2020-12-23 07:39:01,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:01,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:01,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2020-12-23 07:39:01,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:01,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089039476] [2020-12-23 07:39:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:01,949 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:01,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138309943] [2020-12-23 07:39:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:02,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:39:02,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:02,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089039476] [2020-12-23 07:39:02,198 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:02,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138309943] [2020-12-23 07:39:02,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:02,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:39:02,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284930213] [2020-12-23 07:39:02,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:39:02,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:02,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:39:02,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:02,213 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2020-12-23 07:39:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:04,491 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-12-23 07:39:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:39:04,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-23 07:39:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:04,495 INFO L225 Difference]: With dead ends: 63 [2020-12-23 07:39:04,496 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:39:04,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:39:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:39:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-12-23 07:39:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:39:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-12-23 07:39:04,515 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2020-12-23 07:39:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:04,515 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-12-23 07:39:04,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:39:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-12-23 07:39:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:39:04,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:04,517 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:04,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:39:04,733 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:04,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2020-12-23 07:39:04,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:04,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232940706] [2020-12-23 07:39:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:04,749 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:04,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223864404] [2020-12-23 07:39:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:04,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:39:04,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:04,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232940706] [2020-12-23 07:39:04,875 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:04,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223864404] [2020-12-23 07:39:04,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:04,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:39:04,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250257897] [2020-12-23 07:39:04,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:39:04,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:04,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:39:04,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:39:04,877 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-12-23 07:39:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:05,051 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-12-23 07:39:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:39:05,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:39:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:05,053 INFO L225 Difference]: With dead ends: 104 [2020-12-23 07:39:05,053 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:39:05,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:05,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:39:05,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2020-12-23 07:39:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:39:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-23 07:39:05,068 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 27 [2020-12-23 07:39:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:05,069 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-23 07:39:05,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:39:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-23 07:39:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:39:05,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:05,070 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:05,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:05,285 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:05,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2020-12-23 07:39:05,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:05,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925535302] [2020-12-23 07:39:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:05,299 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:05,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353437865] [2020-12-23 07:39:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:05,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:39:05,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:05,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925535302] [2020-12-23 07:39:05,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:05,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353437865] [2020-12-23 07:39:05,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:05,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:39:05,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445324054] [2020-12-23 07:39:05,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:39:05,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:05,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:39:05,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:05,430 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2020-12-23 07:39:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:05,635 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2020-12-23 07:39:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:39:05,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-23 07:39:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:05,636 INFO L225 Difference]: With dead ends: 165 [2020-12-23 07:39:05,637 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 07:39:05,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:39:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 07:39:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 109. [2020-12-23 07:39:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 07:39:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2020-12-23 07:39:05,656 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 30 [2020-12-23 07:39:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:05,656 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2020-12-23 07:39:05,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:39:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2020-12-23 07:39:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:39:05,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:05,658 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-12-23 07:39:05,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:05,869 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:05,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2020-12-23 07:39:05,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:05,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285692868] [2020-12-23 07:39:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:05,883 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:05,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328982002] [2020-12-23 07:39:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:05,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:39:05,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:06,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285692868] [2020-12-23 07:39:06,119 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:06,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328982002] [2020-12-23 07:39:06,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:06,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:39:06,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731278706] [2020-12-23 07:39:06,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:39:06,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:06,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:39:06,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:39:06,121 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand 8 states. [2020-12-23 07:39:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:06,348 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2020-12-23 07:39:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:39:06,348 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 07:39:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:06,351 INFO L225 Difference]: With dead ends: 176 [2020-12-23 07:39:06,351 INFO L226 Difference]: Without dead ends: 170 [2020-12-23 07:39:06,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:06,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-23 07:39:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2020-12-23 07:39:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2020-12-23 07:39:06,376 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 32 [2020-12-23 07:39:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:06,377 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2020-12-23 07:39:06,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:39:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2020-12-23 07:39:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:39:06,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:06,378 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, 1, 1] [2020-12-23 07:39:06,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:39:06,591 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2020-12-23 07:39:06,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:06,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098188058] [2020-12-23 07:39:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:06,619 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:06,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234706899] [2020-12-23 07:39:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:06,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-23 07:39:06,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:07,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098188058] [2020-12-23 07:39:07,225 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:07,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234706899] [2020-12-23 07:39:07,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:07,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:39:07,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514318189] [2020-12-23 07:39:07,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:39:07,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:07,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:39:07,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:39:07,227 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand 16 states. [2020-12-23 07:39:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:07,924 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2020-12-23 07:39:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 07:39:07,925 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-12-23 07:39:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:07,928 INFO L225 Difference]: With dead ends: 167 [2020-12-23 07:39:07,928 INFO L226 Difference]: Without dead ends: 165 [2020-12-23 07:39:07,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:39:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-12-23 07:39:07,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-12-23 07:39:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2020-12-23 07:39:07,957 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 34 [2020-12-23 07:39:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:07,958 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2020-12-23 07:39:07,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:39:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2020-12-23 07:39:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:39:07,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:07,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:08,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:08,175 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:08,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2020-12-23 07:39:08,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:08,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620192850] [2020-12-23 07:39:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:08,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:08,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526669941] [2020-12-23 07:39:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:08,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:39:08,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:08,641 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:39:08,659 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:39:08,667 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:39:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:08,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620192850] [2020-12-23 07:39:08,697 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:08,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526669941] [2020-12-23 07:39:08,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:08,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:39:08,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192473635] [2020-12-23 07:39:08,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:39:08,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:08,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:39:08,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:39:08,700 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand 12 states. [2020-12-23 07:39:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:09,158 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2020-12-23 07:39:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:39:09,159 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-12-23 07:39:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:09,160 INFO L225 Difference]: With dead ends: 172 [2020-12-23 07:39:09,160 INFO L226 Difference]: Without dead ends: 170 [2020-12-23 07:39:09,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:39:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-23 07:39:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2020-12-23 07:39:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2020-12-23 07:39:09,181 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 36 [2020-12-23 07:39:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:09,181 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2020-12-23 07:39:09,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:39:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2020-12-23 07:39:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:39:09,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:09,182 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] [2020-12-23 07:39:09,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:09,398 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:09,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2020-12-23 07:39:09,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:09,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264561630] [2020-12-23 07:39:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:09,411 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:09,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49845549] [2020-12-23 07:39:09,412 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:09,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:09,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:09,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:39:09,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:09,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264561630] [2020-12-23 07:39:09,635 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:09,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49845549] [2020-12-23 07:39:09,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:09,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:39:09,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342290629] [2020-12-23 07:39:09,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:39:09,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:09,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:39:09,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:09,639 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand 10 states. [2020-12-23 07:39:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:09,917 INFO L93 Difference]: Finished difference Result 264 states and 318 transitions. [2020-12-23 07:39:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:39:09,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-23 07:39:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:09,919 INFO L225 Difference]: With dead ends: 264 [2020-12-23 07:39:09,919 INFO L226 Difference]: Without dead ends: 262 [2020-12-23 07:39:09,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-12-23 07:39:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2020-12-23 07:39:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 07:39:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 248 transitions. [2020-12-23 07:39:09,949 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 248 transitions. Word has length 36 [2020-12-23 07:39:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:09,951 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 248 transitions. [2020-12-23 07:39:09,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:39:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 248 transitions. [2020-12-23 07:39:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:39:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:09,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:10,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:39:10,164 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2020-12-23 07:39:10,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:10,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30808130] [2020-12-23 07:39:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:10,187 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:10,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815618232] [2020-12-23 07:39:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:10,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 07:39:10,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:10,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30808130] [2020-12-23 07:39:10,616 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:10,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815618232] [2020-12-23 07:39:10,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:10,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:39:10,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986646358] [2020-12-23 07:39:10,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:39:10,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:10,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:39:10,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:10,618 INFO L87 Difference]: Start difference. First operand 202 states and 248 transitions. Second operand 13 states. [2020-12-23 07:39:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:11,234 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-12-23 07:39:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:39:11,234 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-23 07:39:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:11,236 INFO L225 Difference]: With dead ends: 247 [2020-12-23 07:39:11,236 INFO L226 Difference]: Without dead ends: 241 [2020-12-23 07:39:11,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:39:11,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-23 07:39:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 234. [2020-12-23 07:39:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-23 07:39:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2020-12-23 07:39:11,268 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 39 [2020-12-23 07:39:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:11,268 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2020-12-23 07:39:11,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:39:11,268 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2020-12-23 07:39:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:39:11,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:11,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:11,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:39:11,480 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:11,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:11,481 INFO L82 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2020-12-23 07:39:11,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:11,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502343024] [2020-12-23 07:39:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:11,490 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:11,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823679015] [2020-12-23 07:39:11,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:11,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:11,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:11,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:39:11,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:11,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502343024] [2020-12-23 07:39:11,614 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:11,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823679015] [2020-12-23 07:39:11,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:11,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:39:11,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71376759] [2020-12-23 07:39:11,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:39:11,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:11,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:39:11,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:39:11,616 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand 5 states. [2020-12-23 07:39:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:11,733 INFO L93 Difference]: Finished difference Result 302 states and 365 transitions. [2020-12-23 07:39:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:39:11,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-23 07:39:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:11,736 INFO L225 Difference]: With dead ends: 302 [2020-12-23 07:39:11,736 INFO L226 Difference]: Without dead ends: 210 [2020-12-23 07:39:11,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-12-23 07:39:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 190. [2020-12-23 07:39:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-12-23 07:39:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions. [2020-12-23 07:39:11,770 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 44 [2020-12-23 07:39:11,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:11,771 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 221 transitions. [2020-12-23 07:39:11,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:39:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions. [2020-12-23 07:39:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:39:11,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:11,772 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 07:39:11,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:39:11,985 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:11,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:11,986 INFO L82 PathProgramCache]: Analyzing trace with hash 75787250, now seen corresponding path program 1 times [2020-12-23 07:39:11,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:11,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77937386] [2020-12-23 07:39:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:11,998 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:11,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286162960] [2020-12-23 07:39:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:12,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-23 07:39:12,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:12,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:39:12,794 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:39:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:12,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77937386] [2020-12-23 07:39:12,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:12,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286162960] [2020-12-23 07:39:12,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:12,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:39:12,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270650533] [2020-12-23 07:39:12,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:39:12,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:39:12,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:39:12,845 INFO L87 Difference]: Start difference. First operand 190 states and 221 transitions. Second operand 15 states. [2020-12-23 07:39:31,498 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-23 07:39:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:34,239 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2020-12-23 07:39:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:39:34,239 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-12-23 07:39:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:34,241 INFO L225 Difference]: With dead ends: 194 [2020-12-23 07:39:34,241 INFO L226 Difference]: Without dead ends: 192 [2020-12-23 07:39:34,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:39:34,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-12-23 07:39:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-12-23 07:39:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-12-23 07:39:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 220 transitions. [2020-12-23 07:39:34,267 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 220 transitions. Word has length 45 [2020-12-23 07:39:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:34,267 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 220 transitions. [2020-12-23 07:39:34,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:39:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 220 transitions. [2020-12-23 07:39:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:39:34,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:34,268 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:34,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:34,469 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:34,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:34,470 INFO L82 PathProgramCache]: Analyzing trace with hash -397708876, now seen corresponding path program 3 times [2020-12-23 07:39:34,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:34,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114771302] [2020-12-23 07:39:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:34,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:34,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617908774] [2020-12-23 07:39:34,482 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:34,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:39:34,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:34,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:39:34,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 07:39:34,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114771302] [2020-12-23 07:39:34,645 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:34,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617908774] [2020-12-23 07:39:34,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:34,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:39:34,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86046079] [2020-12-23 07:39:34,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:39:34,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:34,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:39:34,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:39:34,647 INFO L87 Difference]: Start difference. First operand 190 states and 220 transitions. Second operand 5 states. [2020-12-23 07:39:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:34,751 INFO L93 Difference]: Finished difference Result 190 states and 220 transitions. [2020-12-23 07:39:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:39:34,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-23 07:39:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:34,753 INFO L225 Difference]: With dead ends: 190 [2020-12-23 07:39:34,753 INFO L226 Difference]: Without dead ends: 188 [2020-12-23 07:39:34,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:39:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-23 07:39:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 142. [2020-12-23 07:39:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 07:39:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2020-12-23 07:39:34,776 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 45 [2020-12-23 07:39:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:34,776 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2020-12-23 07:39:34,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:39:34,776 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2020-12-23 07:39:34,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 07:39:34,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:34,777 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2020-12-23 07:39:34,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:39:34,990 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:34,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2020-12-23 07:39:34,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:34,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847715009] [2020-12-23 07:39:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:35,013 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:35,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243247898] [2020-12-23 07:39:35,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:35,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:35,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:35,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-23 07:39:35,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:35,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847715009] [2020-12-23 07:39:35,451 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:35,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243247898] [2020-12-23 07:39:35,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:35,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:39:35,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197117274] [2020-12-23 07:39:35,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:39:35,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:35,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:39:35,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:35,453 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand 13 states. [2020-12-23 07:39:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:52,598 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2020-12-23 07:39:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:39:52,599 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-12-23 07:39:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:52,600 INFO L225 Difference]: With dead ends: 181 [2020-12-23 07:39:52,601 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 07:39:52,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:39:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 07:39:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 162. [2020-12-23 07:39:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-23 07:39:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2020-12-23 07:39:52,625 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 48 [2020-12-23 07:39:52,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:52,625 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2020-12-23 07:39:52,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:39:52,625 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2020-12-23 07:39:52,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 07:39:52,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:52,626 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-23 07:39:52,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:39:52,840 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:52,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:52,841 INFO L82 PathProgramCache]: Analyzing trace with hash 194484878, now seen corresponding path program 3 times [2020-12-23 07:39:52,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:52,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602874528] [2020-12-23 07:39:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:52,851 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:52,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208595679] [2020-12-23 07:39:52,851 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 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