/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_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:37:47,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:37:47,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:37:47,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:37:47,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:37:47,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:37:47,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:37:47,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:37:47,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:37:47,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:37:47,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:37:47,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:37:47,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:37:47,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:37:47,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:37:47,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:37:47,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:37:47,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:37:47,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:37:47,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:37:47,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:37:47,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:37:47,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:37:47,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:37:47,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:37:47,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:37:47,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:37:47,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:37:47,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:37:47,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:37:47,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:37:47,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:37:47,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:37:47,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:37:47,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:37:47,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:37:47,119 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 07:37:47,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:37:47,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:37:47,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:37:47,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:37:47,149 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:37:47,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:37:47,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:37:47,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:37:47,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:37:47,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:37:47,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:37:47,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:37:47,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:37:47,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:37:47,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:37:47,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:37:47,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:37:47,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:37:47,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:37:47,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:37:47,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:37:47,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:37:47,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:37:47,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:37:47,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:37:47,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:37:47,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:37:47,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:37:47,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:37:47,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:37:47,648 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:37:47,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c [2020-12-23 07:37:47,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d9a7ed8c/f2c528c975ef413b8ef36b114c18164c/FLAG6c310d424 [2020-12-23 07:37:48,401 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:37:48,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c [2020-12-23 07:37:48,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d9a7ed8c/f2c528c975ef413b8ef36b114c18164c/FLAG6c310d424 [2020-12-23 07:37:48,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d9a7ed8c/f2c528c975ef413b8ef36b114c18164c [2020-12-23 07:37:48,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:37:48,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:37:48,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:37:48,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:37:48,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:37:48,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:37:48" (1/1) ... [2020-12-23 07:37:48,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ce387d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:48, skipping insertion in model container [2020-12-23 07:37:48,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:37:48" (1/1) ... [2020-12-23 07:37:48,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:37:48,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:37:48,972 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_unwindbound100.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 07:37:48,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:37:49,010 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:37:49,022 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_unwindbound100.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 07:37:49,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:37:49,054 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:37:49,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49 WrapperNode [2020-12-23 07:37:49,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:37:49,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:37:49,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:37:49,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:37:49,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:37:49,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:37:49,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:37:49,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:37:49,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (1/1) ... [2020-12-23 07:37:49,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:37:49,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:37:49,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:37:49,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:37:49,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (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 07:37:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:37:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:37:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:37:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:37:49,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:37:49,866 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:37:49,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:49 BoogieIcfgContainer [2020-12-23 07:37:49,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:37:49,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:37:49,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:37:49,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:37:49,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:37:48" (1/3) ... [2020-12-23 07:37:49,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c20f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:37:49, skipping insertion in model container [2020-12-23 07:37:49,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:49" (2/3) ... [2020-12-23 07:37:49,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c20f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:37:49, skipping insertion in model container [2020-12-23 07:37:49,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:49" (3/3) ... [2020-12-23 07:37:49,884 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound100.c [2020-12-23 07:37:49,892 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:37:49,898 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 07:37:49,918 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 07:37:49,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:37:49,966 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:37:49,966 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:37:49,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:37:49,967 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:37:49,967 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:37:49,967 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:37:49,967 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:37:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:37:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:37:49,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:49,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:49,998 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 07:37:50,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:50,005 INFO L82 PathProgramCache]: Analyzing trace with hash -141782897, now seen corresponding path program 1 times [2020-12-23 07:37:50,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:50,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772044049] [2020-12-23 07:37:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:50,251 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 07:37:50,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772044049] [2020-12-23 07:37:50,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:50,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:37:50,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408541881] [2020-12-23 07:37:50,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:37:50,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:50,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:37:50,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:37:50,284 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:37:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:50,328 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-12-23 07:37:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:37:50,330 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 07:37:50,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:50,340 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:37:50,340 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:37:50,345 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 07:37:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:37:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:37:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:37:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-12-23 07:37:50,389 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13 [2020-12-23 07:37:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:50,390 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-12-23 07:37:50,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:37:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-12-23 07:37:50,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:37:50,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:50,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:50,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:37:50,392 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 07:37:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:50,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1057770534, now seen corresponding path program 1 times [2020-12-23 07:37:50,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:50,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086913812] [2020-12-23 07:37:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:50,416 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:50,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372816846] [2020-12-23 07:37:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:50,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 07:37:50,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:50,589 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 07:37:50,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086913812] [2020-12-23 07:37:50,590 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:50,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372816846] [2020-12-23 07:37:50,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:50,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:37:50,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464217973] [2020-12-23 07:37:50,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:37:50,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:50,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:37:50,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:37:50,594 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2020-12-23 07:37:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:50,615 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-12-23 07:37:50,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:37:50,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 07:37:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:50,617 INFO L225 Difference]: With dead ends: 49 [2020-12-23 07:37:50,617 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:37:50,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:37:50,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:37:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 07:37:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:37:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-12-23 07:37:50,626 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2020-12-23 07:37:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:50,626 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-12-23 07:37:50,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:37:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-12-23 07:37:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:37:50,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:50,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:50,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:37:50,843 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 07:37:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:50,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1568670238, now seen corresponding path program 1 times [2020-12-23 07:37:50,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:50,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043983439] [2020-12-23 07:37:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:50,866 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:50,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936250778] [2020-12-23 07:37:50,867 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 07:37:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:50,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:37:50,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:51,001 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 07:37:51,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043983439] [2020-12-23 07:37:51,002 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:51,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936250778] [2020-12-23 07:37:51,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:51,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:37:51,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383767200] [2020-12-23 07:37:51,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:37:51,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:51,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:37:51,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:37:51,007 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-12-23 07:37:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:51,129 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-12-23 07:37:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:37:51,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 07:37:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:51,132 INFO L225 Difference]: With dead ends: 69 [2020-12-23 07:37:51,132 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:37:51,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 07:37:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:37:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-12-23 07:37:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 07:37:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-12-23 07:37:51,142 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 15 [2020-12-23 07:37:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:51,142 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-12-23 07:37:51,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:37:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-12-23 07:37:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:37:51,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:51,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:51,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:51,357 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 07:37:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:51,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1384108475, now seen corresponding path program 1 times [2020-12-23 07:37:51,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:51,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872089118] [2020-12-23 07:37:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:51,375 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:51,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455358339] [2020-12-23 07:37:51,376 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 07:37:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:51,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:37:51,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:51,533 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 07:37:51,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872089118] [2020-12-23 07:37:51,534 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:51,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455358339] [2020-12-23 07:37:51,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:51,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:37:51,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102399596] [2020-12-23 07:37:51,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:51,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:51,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:51,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:51,537 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 8 states. [2020-12-23 07:37:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:51,901 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2020-12-23 07:37:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:37:51,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-12-23 07:37:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:51,903 INFO L225 Difference]: With dead ends: 80 [2020-12-23 07:37:51,904 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 07:37:51,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:37:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 07:37:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 45. [2020-12-23 07:37:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:37:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-23 07:37:51,915 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2020-12-23 07:37:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:51,916 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-23 07:37:51,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-23 07:37:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:37:51,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:51,917 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 07:37:52,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:52,132 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 07:37:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:52,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1311460386, now seen corresponding path program 1 times [2020-12-23 07:37:52,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:52,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886351270] [2020-12-23 07:37:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:52,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:52,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380186420] [2020-12-23 07:37:52,151 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 07:37:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:52,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:37:52,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:52,380 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 07:37:52,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886351270] [2020-12-23 07:37:52,381 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:52,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380186420] [2020-12-23 07:37:52,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:52,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:37:52,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672727326] [2020-12-23 07:37:52,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:52,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:52,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:52,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:52,384 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-12-23 07:37:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:52,563 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-12-23 07:37:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:37:52,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-23 07:37:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:52,566 INFO L225 Difference]: With dead ends: 64 [2020-12-23 07:37:52,566 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 07:37:52,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 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 07:37:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 07:37:52,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-12-23 07:37:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 07:37:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-12-23 07:37:52,577 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 18 [2020-12-23 07:37:52,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:52,577 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-12-23 07:37:52,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:52,577 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-12-23 07:37:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:37:52,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:52,578 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:52,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:52,794 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 07:37:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:52,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1862118746, now seen corresponding path program 1 times [2020-12-23 07:37:52,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:52,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041551257] [2020-12-23 07:37:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:52,809 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:52,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830364519] [2020-12-23 07:37:52,810 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 07:37:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:52,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:37:52,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:52,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041551257] [2020-12-23 07:37:52,917 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:52,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830364519] [2020-12-23 07:37:52,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:52,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:37:52,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633949503] [2020-12-23 07:37:52,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:37:52,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:52,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:37:52,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:37:52,920 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 5 states. [2020-12-23 07:37:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:52,945 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2020-12-23 07:37:52,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:37:52,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 07:37:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:52,948 INFO L225 Difference]: With dead ends: 85 [2020-12-23 07:37:52,948 INFO L226 Difference]: Without dead ends: 55 [2020-12-23 07:37:52,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:37:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-23 07:37:52,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-23 07:37:52,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 07:37:52,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-12-23 07:37:52,959 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 20 [2020-12-23 07:37:52,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:52,959 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-12-23 07:37:52,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:37:52,959 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-12-23 07:37:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:37:52,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:52,960 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 07:37:53,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:37:53,174 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 07:37:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:53,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1887855967, now seen corresponding path program 1 times [2020-12-23 07:37:53,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:53,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364654553] [2020-12-23 07:37:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:53,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:53,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675002113] [2020-12-23 07:37:53,190 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 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 07:37:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:53,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:37:53,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:53,430 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 07:37:53,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364654553] [2020-12-23 07:37:53,431 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:53,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675002113] [2020-12-23 07:37:53,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:53,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:37:53,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109111348] [2020-12-23 07:37:53,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:53,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:53,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:53,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:53,436 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 8 states. [2020-12-23 07:37:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:53,618 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-12-23 07:37:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:37:53,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-23 07:37:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:53,620 INFO L225 Difference]: With dead ends: 62 [2020-12-23 07:37:53,620 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 07:37:53,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 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 07:37:53,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 07:37:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-12-23 07:37:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 07:37:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-23 07:37:53,629 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-23 07:37:53,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:53,629 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-23 07:37:53,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:53,630 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-23 07:37:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:37:53,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:53,631 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 07:37:53,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:53,846 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 07:37:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:53,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1753227772, now seen corresponding path program 1 times [2020-12-23 07:37:53,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:53,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043575915] [2020-12-23 07:37:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:53,862 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:53,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653730095] [2020-12-23 07:37:53,863 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 07:37:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:53,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:37:53,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:54,105 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 07:37:54,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043575915] [2020-12-23 07:37:54,106 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:54,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653730095] [2020-12-23 07:37:54,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:54,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 07:37:54,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789105459] [2020-12-23 07:37:54,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:37:54,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:54,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:37:54,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:37:54,109 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 9 states. [2020-12-23 07:37:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:56,519 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-12-23 07:37:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:37:56,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 07:37:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:56,520 INFO L225 Difference]: With dead ends: 67 [2020-12-23 07:37:56,521 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 07:37:56,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:37:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 07:37:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-12-23 07:37:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 07:37:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-12-23 07:37:56,530 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2020-12-23 07:37:56,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:56,530 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-12-23 07:37:56,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:37:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-12-23 07:37:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:37:56,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:56,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:56,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:56,746 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 07:37:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:56,747 INFO L82 PathProgramCache]: Analyzing trace with hash 29719088, now seen corresponding path program 1 times [2020-12-23 07:37:56,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:56,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31123084] [2020-12-23 07:37:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:56,761 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:56,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017963203] [2020-12-23 07:37:56,762 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 07:37:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:56,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:37:56,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:56,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31123084] [2020-12-23 07:37:56,916 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:56,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017963203] [2020-12-23 07:37:56,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:56,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:37:56,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392057426] [2020-12-23 07:37:56,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:37:56,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:56,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:37:56,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:37:56,919 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 6 states. [2020-12-23 07:37:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:57,116 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2020-12-23 07:37:57,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:37:57,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-12-23 07:37:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:57,120 INFO L225 Difference]: With dead ends: 108 [2020-12-23 07:37:57,120 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 07:37:57,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 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 07:37:57,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 07:37:57,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2020-12-23 07:37:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:37:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-12-23 07:37:57,141 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 26 [2020-12-23 07:37:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:57,141 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-12-23 07:37:57,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:37:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-12-23 07:37:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:37:57,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:57,143 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] [2020-12-23 07:37:57,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:37:57,358 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 07:37:57,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:57,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1666886870, now seen corresponding path program 1 times [2020-12-23 07:37:57,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:57,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129359756] [2020-12-23 07:37:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:57,372 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:57,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296692988] [2020-12-23 07:37:57,373 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 07:37:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:57,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:37:57,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:57,509 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 07:37:57,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129359756] [2020-12-23 07:37:57,510 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:57,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296692988] [2020-12-23 07:37:57,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:57,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:37:57,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069974069] [2020-12-23 07:37:57,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:37:57,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:57,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:37:57,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:37:57,513 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 6 states. [2020-12-23 07:37:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:57,562 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-12-23 07:37:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:37:57,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-23 07:37:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:57,565 INFO L225 Difference]: With dead ends: 89 [2020-12-23 07:37:57,565 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 07:37:57,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:37:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 07:37:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-23 07:37:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:37:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-12-23 07:37:57,595 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 28 [2020-12-23 07:37:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:57,595 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-12-23 07:37:57,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:37:57,596 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-12-23 07:37:57,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:37:57,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:57,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:57,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:57,816 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 07:37:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:57,816 INFO L82 PathProgramCache]: Analyzing trace with hash -134066994, now seen corresponding path program 1 times [2020-12-23 07:37:57,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:57,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300538892] [2020-12-23 07:37:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:57,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:57,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868542512] [2020-12-23 07:37:57,827 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 07:37:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:57,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:37:57,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:57,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300538892] [2020-12-23 07:37:57,961 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:57,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868542512] [2020-12-23 07:37:57,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:57,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:37:57,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470536741] [2020-12-23 07:37:57,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:37:57,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:57,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:37:57,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:37:57,963 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 7 states. [2020-12-23 07:37:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:58,230 INFO L93 Difference]: Finished difference Result 232 states and 266 transitions. [2020-12-23 07:37:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:58,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-23 07:37:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:58,232 INFO L225 Difference]: With dead ends: 232 [2020-12-23 07:37:58,233 INFO L226 Difference]: Without dead ends: 224 [2020-12-23 07:37:58,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:37:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-23 07:37:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2020-12-23 07:37:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-23 07:37:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 176 transitions. [2020-12-23 07:37:58,252 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 176 transitions. Word has length 29 [2020-12-23 07:37:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:58,252 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 176 transitions. [2020-12-23 07:37:58,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:37:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 176 transitions. [2020-12-23 07:37:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:37:58,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:58,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:58,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:58,468 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 07:37:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:58,470 INFO L82 PathProgramCache]: Analyzing trace with hash 966792015, now seen corresponding path program 1 times [2020-12-23 07:37:58,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:58,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269293754] [2020-12-23 07:37:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:58,495 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:58,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127019222] [2020-12-23 07:37:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:58,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:37:58,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:58,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269293754] [2020-12-23 07:37:58,644 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:58,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127019222] [2020-12-23 07:37:58,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:58,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:37:58,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660735740] [2020-12-23 07:37:58,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:37:58,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:58,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:37:58,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:37:58,646 INFO L87 Difference]: Start difference. First operand 136 states and 176 transitions. Second operand 6 states. [2020-12-23 07:37:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:58,689 INFO L93 Difference]: Finished difference Result 179 states and 228 transitions. [2020-12-23 07:37:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:37:58,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-12-23 07:37:58,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:58,691 INFO L225 Difference]: With dead ends: 179 [2020-12-23 07:37:58,691 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 07:37:58,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:37:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 07:37:58,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-12-23 07:37:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-23 07:37:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2020-12-23 07:37:58,709 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 30 [2020-12-23 07:37:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:58,709 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2020-12-23 07:37:58,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:37:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2020-12-23 07:37:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:37:58,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:58,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:58,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:37:58,926 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 07:37:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash 302394158, now seen corresponding path program 1 times [2020-12-23 07:37:58,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:58,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093655203] [2020-12-23 07:37:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:58,951 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:58,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931844201] [2020-12-23 07:37:58,952 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 07:37:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:59,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:37:59,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:59,159 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 07:37:59,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093655203] [2020-12-23 07:37:59,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:59,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931844201] [2020-12-23 07:37:59,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:59,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:59,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673589841] [2020-12-23 07:37:59,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:59,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:59,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:59,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:59,162 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand 8 states. [2020-12-23 07:37:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:59,350 INFO L93 Difference]: Finished difference Result 208 states and 267 transitions. [2020-12-23 07:37:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:37:59,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 07:37:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:59,352 INFO L225 Difference]: With dead ends: 208 [2020-12-23 07:37:59,353 INFO L226 Difference]: Without dead ends: 202 [2020-12-23 07:37:59,353 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 07:37:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-23 07:37:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-12-23 07:37:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-23 07:37:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2020-12-23 07:37:59,374 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 32 [2020-12-23 07:37:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:59,374 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2020-12-23 07:37:59,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2020-12-23 07:37:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:37:59,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:59,376 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:59,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:37:59,592 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 07:37:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:59,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2001825622, now seen corresponding path program 1 times [2020-12-23 07:37:59,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:59,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421049184] [2020-12-23 07:37:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:59,606 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:59,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976916469] [2020-12-23 07:37:59,606 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 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 07:37:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:59,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:37:59,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:59,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421049184] [2020-12-23 07:37:59,773 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:59,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976916469] [2020-12-23 07:37:59,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:59,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:37:59,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189695848] [2020-12-23 07:37:59,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:37:59,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:59,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:37:59,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:37:59,776 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand 7 states. [2020-12-23 07:37:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:59,844 INFO L93 Difference]: Finished difference Result 327 states and 437 transitions. [2020-12-23 07:37:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:37:59,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-12-23 07:37:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:59,846 INFO L225 Difference]: With dead ends: 327 [2020-12-23 07:37:59,847 INFO L226 Difference]: Without dead ends: 200 [2020-12-23 07:37:59,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:37:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-23 07:37:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2020-12-23 07:37:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-23 07:37:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2020-12-23 07:37:59,873 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 34 [2020-12-23 07:37:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:59,873 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2020-12-23 07:37:59,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:37:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2020-12-23 07:37:59,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:37:59,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:59,874 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] [2020-12-23 07:38:00,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:38:00,089 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 07:38:00,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:00,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1456833039, now seen corresponding path program 1 times [2020-12-23 07:38:00,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:00,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861021292] [2020-12-23 07:38:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:00,102 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:00,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301274268] [2020-12-23 07:38:00,102 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 07:38:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:00,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:38:00,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:00,350 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 07:38:00,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861021292] [2020-12-23 07:38:00,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:00,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301274268] [2020-12-23 07:38:00,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:00,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:38:00,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595510403] [2020-12-23 07:38:00,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:38:00,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:00,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:38:00,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:38:00,353 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand 10 states. [2020-12-23 07:38:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:00,671 INFO L93 Difference]: Finished difference Result 208 states and 265 transitions. [2020-12-23 07:38:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:38:00,672 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-12-23 07:38:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:00,673 INFO L225 Difference]: With dead ends: 208 [2020-12-23 07:38:00,674 INFO L226 Difference]: Without dead ends: 206 [2020-12-23 07:38:00,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:38:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-23 07:38:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2020-12-23 07:38:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-23 07:38:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 257 transitions. [2020-12-23 07:38:00,697 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 257 transitions. Word has length 34 [2020-12-23 07:38:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:00,698 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 257 transitions. [2020-12-23 07:38:00,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:38:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 257 transitions. [2020-12-23 07:38:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:38:00,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:00,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:00,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:00,913 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 07:38:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:00,914 INFO L82 PathProgramCache]: Analyzing trace with hash 142945620, now seen corresponding path program 1 times [2020-12-23 07:38:00,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:00,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471848909] [2020-12-23 07:38:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:00,947 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:00,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49802843] [2020-12-23 07:38:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:01,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-23 07:38:01,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:01,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471848909] [2020-12-23 07:38:01,449 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:01,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49802843] [2020-12-23 07:38:01,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:01,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:38:01,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263955830] [2020-12-23 07:38:01,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:38:01,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:01,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:38:01,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:38:01,451 INFO L87 Difference]: Start difference. First operand 198 states and 257 transitions. Second operand 13 states. [2020-12-23 07:38:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:01,988 INFO L93 Difference]: Finished difference Result 225 states and 288 transitions. [2020-12-23 07:38:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:38:01,989 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-12-23 07:38:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:01,990 INFO L225 Difference]: With dead ends: 225 [2020-12-23 07:38:01,990 INFO L226 Difference]: Without dead ends: 223 [2020-12-23 07:38:01,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:38:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-12-23 07:38:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 198. [2020-12-23 07:38:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-23 07:38:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 255 transitions. [2020-12-23 07:38:02,013 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 255 transitions. Word has length 36 [2020-12-23 07:38:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:02,013 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 255 transitions. [2020-12-23 07:38:02,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:38:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 255 transitions. [2020-12-23 07:38:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:38:02,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:02,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:02,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:38:02,229 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 07:38:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:02,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1084150885, now seen corresponding path program 2 times [2020-12-23 07:38:02,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:02,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132511887] [2020-12-23 07:38:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:02,240 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:02,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868770108] [2020-12-23 07:38:02,240 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 07:38:02,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:02,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:02,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:38:02,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:02,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132511887] [2020-12-23 07:38:02,510 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:02,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868770108] [2020-12-23 07:38:02,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:02,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:38:02,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002425183] [2020-12-23 07:38:02,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:38:02,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:02,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:38:02,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:38:02,512 INFO L87 Difference]: Start difference. First operand 198 states and 255 transitions. Second operand 11 states. [2020-12-23 07:38:02,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:02,811 INFO L93 Difference]: Finished difference Result 212 states and 269 transitions. [2020-12-23 07:38:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:38:02,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-12-23 07:38:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:02,814 INFO L225 Difference]: With dead ends: 212 [2020-12-23 07:38:02,814 INFO L226 Difference]: Without dead ends: 210 [2020-12-23 07:38:02,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:38:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-12-23 07:38:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 199. [2020-12-23 07:38:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-23 07:38:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 256 transitions. [2020-12-23 07:38:02,833 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 256 transitions. Word has length 36 [2020-12-23 07:38:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:02,833 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 256 transitions. [2020-12-23 07:38:02,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:38:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 256 transitions. [2020-12-23 07:38:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:38:02,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:02,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:03,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:38:03,049 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 07:38:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:03,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1970211809, now seen corresponding path program 1 times [2020-12-23 07:38:03,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:03,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530777329] [2020-12-23 07:38:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:03,060 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:03,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383928060] [2020-12-23 07:38:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:03,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:38:03,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:03,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530777329] [2020-12-23 07:38:03,188 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:03,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383928060] [2020-12-23 07:38:03,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:03,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:38:03,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879000280] [2020-12-23 07:38:03,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:38:03,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:03,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:38:03,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:38:03,192 INFO L87 Difference]: Start difference. First operand 199 states and 256 transitions. Second operand 7 states. [2020-12-23 07:38:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:03,278 INFO L93 Difference]: Finished difference Result 206 states and 263 transitions. [2020-12-23 07:38:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:38:03,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-23 07:38:03,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:03,280 INFO L225 Difference]: With dead ends: 206 [2020-12-23 07:38:03,280 INFO L226 Difference]: Without dead ends: 202 [2020-12-23 07:38:03,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-23 07:38:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-23 07:38:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 07:38:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 259 transitions. [2020-12-23 07:38:03,302 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 259 transitions. Word has length 38 [2020-12-23 07:38:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:03,302 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 259 transitions. [2020-12-23 07:38:03,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:38:03,302 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 259 transitions. [2020-12-23 07:38:03,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:38:03,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:03,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:03,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:38:03,518 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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 07:38:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:03,519 INFO L82 PathProgramCache]: Analyzing trace with hash -947205511, now seen corresponding path program 1 times [2020-12-23 07:38:03,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:03,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361128895] [2020-12-23 07:38:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:03,527 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:03,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480476384] [2020-12-23 07:38:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:03,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 07:38:03,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:03,842 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 07:38:03,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361128895] [2020-12-23 07:38:03,842 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:03,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480476384] [2020-12-23 07:38:03,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:03,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:38:03,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959240841] [2020-12-23 07:38:03,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:38:03,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:38:03,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:38:03,844 INFO L87 Difference]: Start difference. First operand 202 states and 259 transitions. Second operand 11 states. [2020-12-23 07:38:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:04,555 INFO L93 Difference]: Finished difference Result 239 states and 302 transitions. [2020-12-23 07:38:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:38:04,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-12-23 07:38:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:04,557 INFO L225 Difference]: With dead ends: 239 [2020-12-23 07:38:04,557 INFO L226 Difference]: Without dead ends: 233 [2020-12-23 07:38:04,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:38:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-12-23 07:38:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 226. [2020-12-23 07:38:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-23 07:38:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 291 transitions. [2020-12-23 07:38:04,581 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 291 transitions. Word has length 39 [2020-12-23 07:38:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:04,581 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 291 transitions. [2020-12-23 07:38:04,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:38:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 291 transitions. [2020-12-23 07:38:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:38:04,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:04,582 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:04,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:04,796 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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 07:38:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 170255994, now seen corresponding path program 2 times [2020-12-23 07:38:04,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:04,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567619215] [2020-12-23 07:38:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:04,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:04,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117647885] [2020-12-23 07:38:04,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:04,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:04,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:04,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:38:04,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:04,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567619215] [2020-12-23 07:38:04,960 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:04,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117647885] [2020-12-23 07:38:04,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:04,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:38:04,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080015170] [2020-12-23 07:38:04,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:38:04,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:04,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:38:04,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:38:04,962 INFO L87 Difference]: Start difference. First operand 226 states and 291 transitions. Second operand 8 states. [2020-12-23 07:38:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:05,036 INFO L93 Difference]: Finished difference Result 250 states and 317 transitions. [2020-12-23 07:38:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:38:05,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-23 07:38:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:05,038 INFO L225 Difference]: With dead ends: 250 [2020-12-23 07:38:05,038 INFO L226 Difference]: Without dead ends: 240 [2020-12-23 07:38:05,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:38:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-12-23 07:38:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2020-12-23 07:38:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-23 07:38:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 305 transitions. [2020-12-23 07:38:05,061 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 305 transitions. Word has length 42 [2020-12-23 07:38:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:05,061 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 305 transitions. [2020-12-23 07:38:05,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:38:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 305 transitions. [2020-12-23 07:38:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:38:05,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:05,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:05,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:05,276 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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 07:38:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:05,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1229525663, now seen corresponding path program 1 times [2020-12-23 07:38:05,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:05,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893757183] [2020-12-23 07:38:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:05,286 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:05,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705271687] [2020-12-23 07:38:05,286 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:05,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:38:05,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:05,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893757183] [2020-12-23 07:38:05,431 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:05,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705271687] [2020-12-23 07:38:05,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:05,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:38:05,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043929560] [2020-12-23 07:38:05,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:38:05,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:05,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:38:05,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:38:05,433 INFO L87 Difference]: Start difference. First operand 239 states and 305 transitions. Second operand 8 states. [2020-12-23 07:38:05,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:05,508 INFO L93 Difference]: Finished difference Result 368 states and 482 transitions. [2020-12-23 07:38:05,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:38:05,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-12-23 07:38:05,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:05,511 INFO L225 Difference]: With dead ends: 368 [2020-12-23 07:38:05,511 INFO L226 Difference]: Without dead ends: 241 [2020-12-23 07:38:05,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:38:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-23 07:38:05,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-12-23 07:38:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-23 07:38:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 305 transitions. [2020-12-23 07:38:05,534 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 305 transitions. Word has length 44 [2020-12-23 07:38:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:05,534 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 305 transitions. [2020-12-23 07:38:05,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:38:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 305 transitions. [2020-12-23 07:38:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:38:05,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:05,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:05,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 07:38:05,763 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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 07:38:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:05,764 INFO L82 PathProgramCache]: Analyzing trace with hash -613640578, now seen corresponding path program 2 times [2020-12-23 07:38:05,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:05,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837140677] [2020-12-23 07:38:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:05,771 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:05,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90638978] [2020-12-23 07:38:05,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:05,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:05,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:05,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:38:05,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:05,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837140677] [2020-12-23 07:38:05,890 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:05,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90638978] [2020-12-23 07:38:05,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:05,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:38:05,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114935933] [2020-12-23 07:38:05,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:38:05,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:05,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:38:05,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:38:05,892 INFO L87 Difference]: Start difference. First operand 241 states and 305 transitions. Second operand 5 states. [2020-12-23 07:38:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:05,989 INFO L93 Difference]: Finished difference Result 465 states and 602 transitions. [2020-12-23 07:38:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:38:05,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-23 07:38:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:05,992 INFO L225 Difference]: With dead ends: 465 [2020-12-23 07:38:05,992 INFO L226 Difference]: Without dead ends: 364 [2020-12-23 07:38:05,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 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 07:38:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-12-23 07:38:06,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 286. [2020-12-23 07:38:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-23 07:38:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 367 transitions. [2020-12-23 07:38:06,019 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 367 transitions. Word has length 46 [2020-12-23 07:38:06,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:06,019 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 367 transitions. [2020-12-23 07:38:06,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:38:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 367 transitions. [2020-12-23 07:38:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:38:06,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:06,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:06,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:38:06,234 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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 07:38:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:06,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2041640631, now seen corresponding path program 1 times [2020-12-23 07:38:06,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:06,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454174894] [2020-12-23 07:38:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:06,243 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:06,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966244378] [2020-12-23 07:38:06,244 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:06,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-23 07:38:06,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:06,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454174894] [2020-12-23 07:38:06,923 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:06,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966244378] [2020-12-23 07:38:06,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:06,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:38:06,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633295752] [2020-12-23 07:38:06,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:38:06,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:06,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:38:06,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:38:06,925 INFO L87 Difference]: Start difference. First operand 286 states and 367 transitions. Second operand 13 states. [2020-12-23 07:38:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:12,158 INFO L93 Difference]: Finished difference Result 306 states and 390 transitions. [2020-12-23 07:38:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:38:12,159 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-12-23 07:38:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:12,160 INFO L225 Difference]: With dead ends: 306 [2020-12-23 07:38:12,161 INFO L226 Difference]: Without dead ends: 304 [2020-12-23 07:38:12,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:38:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-12-23 07:38:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 286. [2020-12-23 07:38:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-23 07:38:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 365 transitions. [2020-12-23 07:38:12,190 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 365 transitions. Word has length 46 [2020-12-23 07:38:12,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:12,190 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 365 transitions. [2020-12-23 07:38:12,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:38:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 365 transitions. [2020-12-23 07:38:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:38:12,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:12,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:12,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:12,406 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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 07:38:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:12,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1100435366, now seen corresponding path program 3 times [2020-12-23 07:38:12,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:12,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594112441] [2020-12-23 07:38:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:12,416 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:12,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863391045] [2020-12-23 07:38:12,416 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:12,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:38:12,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:12,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:38:12,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 07:38:12,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594112441] [2020-12-23 07:38:12,580 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:12,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863391045] [2020-12-23 07:38:12,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:12,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:38:12,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28492814] [2020-12-23 07:38:12,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:38:12,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:12,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:38:12,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:38:12,581 INFO L87 Difference]: Start difference. First operand 286 states and 365 transitions. Second operand 5 states. [2020-12-23 07:38:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:12,690 INFO L93 Difference]: Finished difference Result 286 states and 365 transitions. [2020-12-23 07:38:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:38:12,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-23 07:38:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:12,692 INFO L225 Difference]: With dead ends: 286 [2020-12-23 07:38:12,692 INFO L226 Difference]: Without dead ends: 284 [2020-12-23 07:38:12,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 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 07:38:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-12-23 07:38:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 241. [2020-12-23 07:38:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-23 07:38:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 297 transitions. [2020-12-23 07:38:12,727 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 297 transitions. Word has length 46 [2020-12-23 07:38:12,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:12,728 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 297 transitions. [2020-12-23 07:38:12,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:38:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 297 transitions. [2020-12-23 07:38:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 07:38:12,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:12,728 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] [2020-12-23 07:38:12,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 07:38:12,942 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 07:38:12,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:12,943 INFO L82 PathProgramCache]: Analyzing trace with hash -316772764, now seen corresponding path program 2 times [2020-12-23 07:38:12,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:12,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453179828] [2020-12-23 07:38:12,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:12,957 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:12,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733358331] [2020-12-23 07:38:12,958 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:13,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:13,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:13,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:38:13,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:13,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453179828] [2020-12-23 07:38:13,358 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:13,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733358331] [2020-12-23 07:38:13,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:13,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:38:13,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062652434] [2020-12-23 07:38:13,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:38:13,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:13,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:38:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:38:13,360 INFO L87 Difference]: Start difference. First operand 241 states and 297 transitions. Second operand 13 states. [2020-12-23 07:38:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:14,183 INFO L93 Difference]: Finished difference Result 272 states and 333 transitions. [2020-12-23 07:38:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:38:14,184 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-12-23 07:38:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:14,186 INFO L225 Difference]: With dead ends: 272 [2020-12-23 07:38:14,186 INFO L226 Difference]: Without dead ends: 266 [2020-12-23 07:38:14,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:38:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-23 07:38:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 262. [2020-12-23 07:38:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-23 07:38:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 323 transitions. [2020-12-23 07:38:14,220 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 323 transitions. Word has length 49 [2020-12-23 07:38:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:14,220 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 323 transitions. [2020-12-23 07:38:14,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:38:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 323 transitions. [2020-12-23 07:38:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 07:38:14,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:14,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:14,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:14,434 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 07:38:14,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:14,435 INFO L82 PathProgramCache]: Analyzing trace with hash -231890065, now seen corresponding path program 2 times [2020-12-23 07:38:14,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:14,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087981915] [2020-12-23 07:38:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:14,447 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:14,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931569793] [2020-12-23 07:38:14,447 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:14,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:14,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:14,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 07:38:14,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:14,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087981915] [2020-12-23 07:38:14,614 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:14,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931569793] [2020-12-23 07:38:14,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:14,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:38:14,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717282051] [2020-12-23 07:38:14,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:38:14,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:14,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:38:14,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:14,616 INFO L87 Difference]: Start difference. First operand 262 states and 323 transitions. Second operand 9 states. [2020-12-23 07:38:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:14,744 INFO L93 Difference]: Finished difference Result 297 states and 361 transitions. [2020-12-23 07:38:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:38:14,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-23 07:38:14,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:14,746 INFO L225 Difference]: With dead ends: 297 [2020-12-23 07:38:14,747 INFO L226 Difference]: Without dead ends: 287 [2020-12-23 07:38:14,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:38:14,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-23 07:38:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2020-12-23 07:38:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-23 07:38:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 347 transitions. [2020-12-23 07:38:14,786 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 347 transitions. Word has length 52 [2020-12-23 07:38:14,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:14,787 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 347 transitions. [2020-12-23 07:38:14,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:38:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 347 transitions. [2020-12-23 07:38:14,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 07:38:14,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:14,788 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-23 07:38:15,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 07:38:15,002 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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 07:38:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1401161001, now seen corresponding path program 3 times [2020-12-23 07:38:15,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:15,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789637905] [2020-12-23 07:38:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:15,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:15,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521464420] [2020-12-23 07:38:15,010 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true