/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:42:22,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:42:22,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:42:22,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:42:22,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:42:22,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:42:22,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:42:22,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:42:22,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:42:22,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:42:22,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:42:22,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:42:22,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:42:22,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:42:22,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:42:22,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:42:22,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:42:22,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:42:22,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:42:23,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:42:23,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:42:23,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:42:23,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:42:23,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:42:23,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:42:23,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:42:23,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:42:23,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:42:23,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:42:23,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:42:23,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:42:23,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:42:23,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:42:23,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:42:23,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:42:23,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:42:23,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:42:23,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:42:23,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:42:23,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:42:23,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:42:23,117 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:42:23,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:42:23,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:42:23,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:42:23,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:42:23,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:42:23,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:42:23,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:42:23,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:42:23,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:42:23,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:42:23,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:42:23,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:42:23,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:42:23,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:42:23,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:42:23,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:42:23,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:42:23,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:42:23,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:42:23,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:42:23,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:42:23,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:42:23,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:42:23,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:42:23,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:42:23,592 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:42:23,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c [2020-12-23 07:42:23,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/312a149e0/a2e7a1d34e3649d288105047afe636e8/FLAGe4cf22aa0 [2020-12-23 07:42:24,269 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:42:24,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c [2020-12-23 07:42:24,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/312a149e0/a2e7a1d34e3649d288105047afe636e8/FLAGe4cf22aa0 [2020-12-23 07:42:24,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/312a149e0/a2e7a1d34e3649d288105047afe636e8 [2020-12-23 07:42:24,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:42:24,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:42:24,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:42:24,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:42:24,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:42:24,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:42:24" (1/1) ... [2020-12-23 07:42:24,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d37c6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:24, skipping insertion in model container [2020-12-23 07:42:24,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:42:24" (1/1) ... [2020-12-23 07:42:24,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:42:24,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:42:24,925 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:42:24,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:42:24,997 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:42:25,009 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:42:25,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:42:25,038 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:42:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25 WrapperNode [2020-12-23 07:42:25,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:42:25,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:42:25,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:42:25,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:42:25,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:42:25,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:42:25,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:42:25,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:42:25,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... [2020-12-23 07:42:25,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:42:25,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:42:25,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:42:25,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:42:25,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:42:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:42:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:42:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:42:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:42:25,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:42:25,713 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-23 07:42:25,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:42:25 BoogieIcfgContainer [2020-12-23 07:42:25,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:42:25,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:42:25,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:42:25,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:42:25,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:42:24" (1/3) ... [2020-12-23 07:42:25,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2685bab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:42:25, skipping insertion in model container [2020-12-23 07:42:25,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:42:25" (2/3) ... [2020-12-23 07:42:25,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2685bab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:42:25, skipping insertion in model container [2020-12-23 07:42:25,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:42:25" (3/3) ... [2020-12-23 07:42:25,736 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound100.c [2020-12-23 07:42:25,744 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:42:25,751 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 07:42:25,773 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 07:42:25,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:42:25,821 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:42:25,821 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:42:25,821 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:42:25,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:42:25,822 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:42:25,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:42:25,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:42:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:42:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:42:25,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:25,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:25,850 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:25,859 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2020-12-23 07:42:25,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:25,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403457049] [2020-12-23 07:42:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:26,105 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 07:42:26,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403457049] [2020-12-23 07:42:26,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:26,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:42:26,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291378657] [2020-12-23 07:42:26,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:42:26,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:26,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:42:26,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:42:26,136 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:42:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:26,170 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2020-12-23 07:42:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:42:26,172 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-23 07:42:26,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:26,182 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:42:26,183 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:42:26,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:42:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:42:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:42:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:42:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:42:26,237 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2020-12-23 07:42:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:26,238 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:42:26,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:42:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:42:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:42:26,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:26,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:26,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:42:26,242 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:26,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:26,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2020-12-23 07:42:26,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:26,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729566617] [2020-12-23 07:42:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:26,307 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:26,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45346595] [2020-12-23 07:42:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:26,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:42:26,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:26,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729566617] [2020-12-23 07:42:26,500 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:26,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45346595] [2020-12-23 07:42:26,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:26,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:26,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906804641] [2020-12-23 07:42:26,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:26,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:26,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:26,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:26,504 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-23 07:42:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:26,612 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-23 07:42:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:42:26,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 07:42:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:26,615 INFO L225 Difference]: With dead ends: 64 [2020-12-23 07:42:26,615 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 07:42:26,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:42:26,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 07:42:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2020-12-23 07:42:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:42:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:42:26,626 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2020-12-23 07:42:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:26,626 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:42:26,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:42:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:42:26,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:26,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:26,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:42:26,842 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:26,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2020-12-23 07:42:26,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:26,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073443758] [2020-12-23 07:42:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:26,874 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:26,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785042530] [2020-12-23 07:42:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:26,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:42:26,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:27,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073443758] [2020-12-23 07:42:27,178 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:27,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785042530] [2020-12-23 07:42:27,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:27,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 07:42:27,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748523312] [2020-12-23 07:42:27,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:42:27,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:27,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:42:27,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:42:27,181 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 10 states. [2020-12-23 07:42:27,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:27,560 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-12-23 07:42:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:42:27,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-23 07:42:27,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:27,564 INFO L225 Difference]: With dead ends: 60 [2020-12-23 07:42:27,564 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 07:42:27,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:42:27,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 07:42:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-12-23 07:42:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 07:42:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-12-23 07:42:27,582 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2020-12-23 07:42:27,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:27,583 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-12-23 07:42:27,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:42:27,583 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-12-23 07:42:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:42:27,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:27,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:27,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:27,790 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:27,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:27,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2020-12-23 07:42:27,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:27,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595794390] [2020-12-23 07:42:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:27,809 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:27,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707395076] [2020-12-23 07:42:27,810 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:27,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:42:27,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:28,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595794390] [2020-12-23 07:42:28,030 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:28,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707395076] [2020-12-23 07:42:28,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:28,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:42:28,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834876588] [2020-12-23 07:42:28,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:42:28,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:28,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:42:28,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:42:28,033 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 8 states. [2020-12-23 07:42:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:28,302 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-23 07:42:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:42:28,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-23 07:42:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:28,306 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:42:28,306 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:42:28,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:42:28,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-12-23 07:42:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 07:42:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-23 07:42:28,328 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2020-12-23 07:42:28,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:28,329 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-23 07:42:28,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:42:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-23 07:42:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:42:28,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:28,330 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:28,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:28,545 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:28,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2020-12-23 07:42:28,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:28,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982555298] [2020-12-23 07:42:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:28,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:28,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703426863] [2020-12-23 07:42:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:28,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:42:28,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:28,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982555298] [2020-12-23 07:42:28,698 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:28,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703426863] [2020-12-23 07:42:28,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:28,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:42:28,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847359792] [2020-12-23 07:42:28,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:42:28,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:28,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:42:28,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:42:28,701 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2020-12-23 07:42:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:28,897 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-12-23 07:42:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:42:28,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 07:42:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:28,900 INFO L225 Difference]: With dead ends: 140 [2020-12-23 07:42:28,900 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 07:42:28,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 07:42:28,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2020-12-23 07:42:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:42:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-12-23 07:42:28,915 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2020-12-23 07:42:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:28,915 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-12-23 07:42:28,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:42:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-12-23 07:42:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:42:28,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:28,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:29,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:29,132 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:29,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2020-12-23 07:42:29,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:29,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022341497] [2020-12-23 07:42:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:29,159 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:29,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490103411] [2020-12-23 07:42:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:29,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:42:29,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:29,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022341497] [2020-12-23 07:42:29,322 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:29,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490103411] [2020-12-23 07:42:29,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:29,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:42:29,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665204606] [2020-12-23 07:42:29,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:42:29,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:29,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:42:29,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:42:29,325 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 8 states. [2020-12-23 07:42:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:29,563 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-12-23 07:42:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:42:29,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-23 07:42:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:29,565 INFO L225 Difference]: With dead ends: 95 [2020-12-23 07:42:29,565 INFO L226 Difference]: Without dead ends: 93 [2020-12-23 07:42:29,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-23 07:42:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-12-23 07:42:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 07:42:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-12-23 07:42:29,587 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2020-12-23 07:42:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:29,587 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-12-23 07:42:29,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:42:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-12-23 07:42:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:42:29,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:29,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:29,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:42:29,797 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:29,798 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2020-12-23 07:42:29,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:29,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085295879] [2020-12-23 07:42:29,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:29,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:29,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80238836] [2020-12-23 07:42:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:29,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:42:29,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:30,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085295879] [2020-12-23 07:42:30,031 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:30,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80238836] [2020-12-23 07:42:30,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:30,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:42:30,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038276487] [2020-12-23 07:42:30,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:42:30,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:30,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:42:30,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:42:30,034 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 9 states. [2020-12-23 07:42:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:30,271 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2020-12-23 07:42:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:42:30,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 07:42:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:30,273 INFO L225 Difference]: With dead ends: 135 [2020-12-23 07:42:30,273 INFO L226 Difference]: Without dead ends: 133 [2020-12-23 07:42:30,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:42:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-23 07:42:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 116. [2020-12-23 07:42:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-23 07:42:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2020-12-23 07:42:30,293 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 22 [2020-12-23 07:42:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:30,293 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2020-12-23 07:42:30,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:42:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2020-12-23 07:42:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 07:42:30,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:30,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:30,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:30,510 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:30,511 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2020-12-23 07:42:30,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:30,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953174233] [2020-12-23 07:42:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:30,535 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:30,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617587269] [2020-12-23 07:42:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:30,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:42:30,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:30,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953174233] [2020-12-23 07:42:30,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:30,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617587269] [2020-12-23 07:42:30,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:30,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:30,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757257147] [2020-12-23 07:42:30,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:30,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:30,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:30,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:30,636 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand 5 states. [2020-12-23 07:42:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:30,765 INFO L93 Difference]: Finished difference Result 226 states and 287 transitions. [2020-12-23 07:42:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:42:30,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-23 07:42:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:30,768 INFO L225 Difference]: With dead ends: 226 [2020-12-23 07:42:30,769 INFO L226 Difference]: Without dead ends: 224 [2020-12-23 07:42:30,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:42:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-23 07:42:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2020-12-23 07:42:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-23 07:42:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 205 transitions. [2020-12-23 07:42:30,800 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 205 transitions. Word has length 23 [2020-12-23 07:42:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:30,800 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 205 transitions. [2020-12-23 07:42:30,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 205 transitions. [2020-12-23 07:42:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:42:30,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:30,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:31,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:31,017 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:31,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:31,018 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2020-12-23 07:42:31,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:31,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704236397] [2020-12-23 07:42:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:31,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:31,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098597643] [2020-12-23 07:42:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:31,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:42:31,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:31,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704236397] [2020-12-23 07:42:31,244 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:31,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098597643] [2020-12-23 07:42:31,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:31,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:42:31,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755157522] [2020-12-23 07:42:31,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:42:31,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:31,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:42:31,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:42:31,247 INFO L87 Difference]: Start difference. First operand 164 states and 205 transitions. Second operand 8 states. [2020-12-23 07:42:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:31,545 INFO L93 Difference]: Finished difference Result 179 states and 214 transitions. [2020-12-23 07:42:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:42:31,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-23 07:42:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:31,547 INFO L225 Difference]: With dead ends: 179 [2020-12-23 07:42:31,548 INFO L226 Difference]: Without dead ends: 177 [2020-12-23 07:42:31,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:42:31,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-23 07:42:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2020-12-23 07:42:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-23 07:42:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 203 transitions. [2020-12-23 07:42:31,571 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 203 transitions. Word has length 24 [2020-12-23 07:42:31,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:31,571 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 203 transitions. [2020-12-23 07:42:31,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:42:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 203 transitions. [2020-12-23 07:42:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:42:31,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:31,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:31,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:42:31,789 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:31,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:31,790 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2020-12-23 07:42:31,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:31,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592679425] [2020-12-23 07:42:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:31,805 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:31,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621171802] [2020-12-23 07:42:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:31,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:42:31,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:32,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592679425] [2020-12-23 07:42:32,022 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:32,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621171802] [2020-12-23 07:42:32,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:32,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:42:32,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629733446] [2020-12-23 07:42:32,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:42:32,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:32,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:42:32,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:42:32,024 INFO L87 Difference]: Start difference. First operand 164 states and 203 transitions. Second operand 11 states. [2020-12-23 07:42:32,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:32,422 INFO L93 Difference]: Finished difference Result 277 states and 328 transitions. [2020-12-23 07:42:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:42:32,422 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-12-23 07:42:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:32,424 INFO L225 Difference]: With dead ends: 277 [2020-12-23 07:42:32,424 INFO L226 Difference]: Without dead ends: 275 [2020-12-23 07:42:32,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:42:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-23 07:42:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 198. [2020-12-23 07:42:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-23 07:42:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2020-12-23 07:42:32,455 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 26 [2020-12-23 07:42:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:32,455 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2020-12-23 07:42:32,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:42:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2020-12-23 07:42:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:42:32,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:32,459 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:32,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:32,674 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:32,675 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2020-12-23 07:42:32,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:32,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031189847] [2020-12-23 07:42:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:32,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:32,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438547873] [2020-12-23 07:42:32,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:32,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:32,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:32,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:42:32,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:32,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031189847] [2020-12-23 07:42:32,822 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:32,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438547873] [2020-12-23 07:42:32,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:32,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:32,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265976556] [2020-12-23 07:42:32,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:32,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:32,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:32,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:32,824 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand 5 states. [2020-12-23 07:42:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:32,937 INFO L93 Difference]: Finished difference Result 291 states and 355 transitions. [2020-12-23 07:42:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:42:32,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-23 07:42:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:32,942 INFO L225 Difference]: With dead ends: 291 [2020-12-23 07:42:32,942 INFO L226 Difference]: Without dead ends: 209 [2020-12-23 07:42:32,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:42:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-23 07:42:32,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 155. [2020-12-23 07:42:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-23 07:42:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2020-12-23 07:42:32,968 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 27 [2020-12-23 07:42:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:32,968 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2020-12-23 07:42:32,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2020-12-23 07:42:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:42:32,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:32,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:33,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:33,189 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:33,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2020-12-23 07:42:33,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:33,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224594981] [2020-12-23 07:42:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:33,202 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:33,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896891380] [2020-12-23 07:42:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:33,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 07:42:33,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:33,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224594981] [2020-12-23 07:42:33,685 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:33,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896891380] [2020-12-23 07:42:33,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:33,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:42:33,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192168227] [2020-12-23 07:42:33,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:42:33,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:33,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:42:33,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:42:33,690 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand 13 states. [2020-12-23 07:42:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:34,449 INFO L93 Difference]: Finished difference Result 282 states and 333 transitions. [2020-12-23 07:42:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:42:34,449 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-12-23 07:42:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:34,451 INFO L225 Difference]: With dead ends: 282 [2020-12-23 07:42:34,451 INFO L226 Difference]: Without dead ends: 198 [2020-12-23 07:42:34,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:42:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-23 07:42:34,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 164. [2020-12-23 07:42:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-23 07:42:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2020-12-23 07:42:34,477 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 32 [2020-12-23 07:42:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:34,477 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2020-12-23 07:42:34,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:42:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2020-12-23 07:42:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:42:34,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:34,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:34,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:42:34,695 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:34,696 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2020-12-23 07:42:34,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:34,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768026936] [2020-12-23 07:42:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:34,714 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:34,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305691154] [2020-12-23 07:42:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:34,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:42:34,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:34,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768026936] [2020-12-23 07:42:34,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:34,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305691154] [2020-12-23 07:42:34,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:34,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:42:34,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058033825] [2020-12-23 07:42:34,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:42:34,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:42:34,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:42:34,902 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 9 states. [2020-12-23 07:42:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:35,348 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2020-12-23 07:42:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:42:35,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-23 07:42:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:35,350 INFO L225 Difference]: With dead ends: 211 [2020-12-23 07:42:35,350 INFO L226 Difference]: Without dead ends: 209 [2020-12-23 07:42:35,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:42:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-23 07:42:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 181. [2020-12-23 07:42:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 07:42:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 212 transitions. [2020-12-23 07:42:35,376 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 212 transitions. Word has length 32 [2020-12-23 07:42:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:35,376 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 212 transitions. [2020-12-23 07:42:35,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:42:35,376 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 212 transitions. [2020-12-23 07:42:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:42:35,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:35,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:35,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:42:35,592 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:35,593 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2020-12-23 07:42:35,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:35,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469281274] [2020-12-23 07:42:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:35,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:35,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720373819] [2020-12-23 07:42:35,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:35,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:35,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:35,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:42:35,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:35,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469281274] [2020-12-23 07:42:35,763 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:35,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720373819] [2020-12-23 07:42:35,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:35,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:42:35,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695836337] [2020-12-23 07:42:35,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:42:35,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:35,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:42:35,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:42:35,765 INFO L87 Difference]: Start difference. First operand 181 states and 212 transitions. Second operand 8 states. [2020-12-23 07:42:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:36,148 INFO L93 Difference]: Finished difference Result 402 states and 471 transitions. [2020-12-23 07:42:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:42:36,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-23 07:42:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:36,152 INFO L225 Difference]: With dead ends: 402 [2020-12-23 07:42:36,152 INFO L226 Difference]: Without dead ends: 398 [2020-12-23 07:42:36,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:42:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-23 07:42:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 221. [2020-12-23 07:42:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-23 07:42:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 265 transitions. [2020-12-23 07:42:36,191 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 265 transitions. Word has length 37 [2020-12-23 07:42:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:36,192 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 265 transitions. [2020-12-23 07:42:36,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:42:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 265 transitions. [2020-12-23 07:42:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:42:36,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:36,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:36,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:42:36,408 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:36,409 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2020-12-23 07:42:36,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:36,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054106727] [2020-12-23 07:42:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:36,439 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:36,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303812373] [2020-12-23 07:42:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:36,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:42:36,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:36,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054106727] [2020-12-23 07:42:36,692 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:36,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303812373] [2020-12-23 07:42:36,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:36,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:42:36,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276559583] [2020-12-23 07:42:36,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:42:36,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:36,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:42:36,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:42:36,694 INFO L87 Difference]: Start difference. First operand 221 states and 265 transitions. Second operand 12 states. [2020-12-23 07:42:37,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:37,320 INFO L93 Difference]: Finished difference Result 363 states and 428 transitions. [2020-12-23 07:42:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 07:42:37,321 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-12-23 07:42:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:37,324 INFO L225 Difference]: With dead ends: 363 [2020-12-23 07:42:37,324 INFO L226 Difference]: Without dead ends: 361 [2020-12-23 07:42:37,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2020-12-23 07:42:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-12-23 07:42:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 261. [2020-12-23 07:42:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-23 07:42:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 313 transitions. [2020-12-23 07:42:37,364 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 313 transitions. Word has length 37 [2020-12-23 07:42:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:37,364 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 313 transitions. [2020-12-23 07:42:37,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:42:37,364 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 313 transitions. [2020-12-23 07:42:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:42:37,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:37,365 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:37,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:37,580 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2020-12-23 07:42:37,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:37,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999018719] [2020-12-23 07:42:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:37,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:37,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22465316] [2020-12-23 07:42:37,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:37,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 07:42:37,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 07:42:37,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999018719] [2020-12-23 07:42:37,702 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:37,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22465316] [2020-12-23 07:42:37,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:37,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:37,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445509927] [2020-12-23 07:42:37,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:37,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:37,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:37,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:37,704 INFO L87 Difference]: Start difference. First operand 261 states and 313 transitions. Second operand 5 states. [2020-12-23 07:42:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:37,818 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2020-12-23 07:42:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:42:37,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-23 07:42:37,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:37,820 INFO L225 Difference]: With dead ends: 454 [2020-12-23 07:42:37,821 INFO L226 Difference]: Without dead ends: 287 [2020-12-23 07:42:37,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:42:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-23 07:42:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2020-12-23 07:42:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-23 07:42:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 312 transitions. [2020-12-23 07:42:37,873 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 312 transitions. Word has length 38 [2020-12-23 07:42:37,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:37,874 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 312 transitions. [2020-12-23 07:42:37,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 312 transitions. [2020-12-23 07:42:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:42:37,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:37,875 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:38,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:42:38,089 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:38,090 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2020-12-23 07:42:38,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:38,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879476960] [2020-12-23 07:42:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:38,109 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:38,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821010912] [2020-12-23 07:42:38,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:38,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:42:38,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:38,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 07:42:38,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 07:42:38,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879476960] [2020-12-23 07:42:38,220 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:38,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821010912] [2020-12-23 07:42:38,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:42:38,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:42:38,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539200476] [2020-12-23 07:42:38,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:42:38,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:38,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:42:38,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:42:38,223 INFO L87 Difference]: Start difference. First operand 261 states and 312 transitions. Second operand 5 states. [2020-12-23 07:42:38,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:38,350 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2020-12-23 07:42:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:42:38,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-23 07:42:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:38,352 INFO L225 Difference]: With dead ends: 301 [2020-12-23 07:42:38,352 INFO L226 Difference]: Without dead ends: 299 [2020-12-23 07:42:38,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:42:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-23 07:42:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 288. [2020-12-23 07:42:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-12-23 07:42:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 345 transitions. [2020-12-23 07:42:38,394 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 345 transitions. Word has length 38 [2020-12-23 07:42:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:38,394 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 345 transitions. [2020-12-23 07:42:38,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:42:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 345 transitions. [2020-12-23 07:42:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:42:38,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:38,395 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:38,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:42:38,610 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:38,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2020-12-23 07:42:38,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:38,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742752936] [2020-12-23 07:42:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:38,621 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:38,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813492637] [2020-12-23 07:42:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:38,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:42:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:39,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742752936] [2020-12-23 07:42:39,088 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:39,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813492637] [2020-12-23 07:42:39,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:39,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:42:39,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367880230] [2020-12-23 07:42:39,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:42:39,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:39,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:42:39,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:42:39,091 INFO L87 Difference]: Start difference. First operand 288 states and 345 transitions. Second operand 15 states. [2020-12-23 07:42:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:41,658 INFO L93 Difference]: Finished difference Result 450 states and 519 transitions. [2020-12-23 07:42:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-23 07:42:41,658 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-12-23 07:42:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:41,661 INFO L225 Difference]: With dead ends: 450 [2020-12-23 07:42:41,661 INFO L226 Difference]: Without dead ends: 448 [2020-12-23 07:42:41,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=578, Invalid=2178, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 07:42:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-12-23 07:42:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 382. [2020-12-23 07:42:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-12-23 07:42:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 470 transitions. [2020-12-23 07:42:41,739 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 470 transitions. Word has length 39 [2020-12-23 07:42:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:41,740 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 470 transitions. [2020-12-23 07:42:41,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:42:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 470 transitions. [2020-12-23 07:42:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 07:42:41,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:41,741 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:41,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:42:41,956 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:41,957 INFO L82 PathProgramCache]: Analyzing trace with hash 274679198, now seen corresponding path program 1 times [2020-12-23 07:42:41,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:41,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306996985] [2020-12-23 07:42:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:41,969 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:41,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703890673] [2020-12-23 07:42:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:42,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 81 conjunts are in the unsatisfiable core [2020-12-23 07:42:42,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:42,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306996985] [2020-12-23 07:42:42,746 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:42,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703890673] [2020-12-23 07:42:42,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:42,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-23 07:42:42,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446461706] [2020-12-23 07:42:42,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 07:42:42,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 07:42:42,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:42:42,748 INFO L87 Difference]: Start difference. First operand 382 states and 470 transitions. Second operand 18 states. [2020-12-23 07:42:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:44,261 INFO L93 Difference]: Finished difference Result 461 states and 553 transitions. [2020-12-23 07:42:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 07:42:44,262 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2020-12-23 07:42:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:44,265 INFO L225 Difference]: With dead ends: 461 [2020-12-23 07:42:44,265 INFO L226 Difference]: Without dead ends: 459 [2020-12-23 07:42:44,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2020-12-23 07:42:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-12-23 07:42:44,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 429. [2020-12-23 07:42:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-23 07:42:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 526 transitions. [2020-12-23 07:42:44,345 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 526 transitions. Word has length 41 [2020-12-23 07:42:44,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:44,345 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 526 transitions. [2020-12-23 07:42:44,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 07:42:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 526 transitions. [2020-12-23 07:42:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 07:42:44,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:44,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:44,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:44,559 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:44,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2020-12-23 07:42:44,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:44,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054464810] [2020-12-23 07:42:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:44,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:44,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302008603] [2020-12-23 07:42:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:44,635 WARN L261 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-23 07:42:44,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:45,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054464810] [2020-12-23 07:42:45,524 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:45,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302008603] [2020-12-23 07:42:45,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:45,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-23 07:42:45,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173905863] [2020-12-23 07:42:45,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 07:42:45,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 07:42:45,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:42:45,526 INFO L87 Difference]: Start difference. First operand 429 states and 526 transitions. Second operand 19 states. [2020-12-23 07:42:46,057 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-23 07:42:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:47,000 INFO L93 Difference]: Finished difference Result 535 states and 645 transitions. [2020-12-23 07:42:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 07:42:47,001 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-12-23 07:42:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:47,004 INFO L225 Difference]: With dead ends: 535 [2020-12-23 07:42:47,004 INFO L226 Difference]: Without dead ends: 527 [2020-12-23 07:42:47,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2020-12-23 07:42:47,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-12-23 07:42:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 450. [2020-12-23 07:42:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-12-23 07:42:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 550 transitions. [2020-12-23 07:42:47,084 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 550 transitions. Word has length 41 [2020-12-23 07:42:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:47,085 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 550 transitions. [2020-12-23 07:42:47,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 07:42:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 550 transitions. [2020-12-23 07:42:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 07:42:47,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:47,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:47,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:47,300 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:47,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1278543847, now seen corresponding path program 2 times [2020-12-23 07:42:47,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:47,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199427383] [2020-12-23 07:42:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:47,310 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:47,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487988975] [2020-12-23 07:42:47,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:47,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:47,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:47,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:42:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:47,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199427383] [2020-12-23 07:42:47,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:47,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487988975] [2020-12-23 07:42:47,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:47,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:42:47,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345956536] [2020-12-23 07:42:47,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:42:47,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:47,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:42:47,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:42:47,587 INFO L87 Difference]: Start difference. First operand 450 states and 550 transitions. Second operand 11 states. [2020-12-23 07:42:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:48,353 INFO L93 Difference]: Finished difference Result 501 states and 605 transitions. [2020-12-23 07:42:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:42:48,353 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-12-23 07:42:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:48,356 INFO L225 Difference]: With dead ends: 501 [2020-12-23 07:42:48,356 INFO L226 Difference]: Without dead ends: 499 [2020-12-23 07:42:48,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:42:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-12-23 07:42:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 468. [2020-12-23 07:42:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-12-23 07:42:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 571 transitions. [2020-12-23 07:42:48,446 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 571 transitions. Word has length 41 [2020-12-23 07:42:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:48,446 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 571 transitions. [2020-12-23 07:42:48,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:42:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 571 transitions. [2020-12-23 07:42:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:42:48,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:48,447 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:48,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 07:42:48,661 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:48,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2020-12-23 07:42:48,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:48,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262941725] [2020-12-23 07:42:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:48,677 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:48,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377479802] [2020-12-23 07:42:48,678 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 07:42:48,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:48,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:48,752 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 93 conjunts are in the unsatisfiable core [2020-12-23 07:42:48,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:49,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262941725] [2020-12-23 07:42:49,469 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:49,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377479802] [2020-12-23 07:42:49,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:49,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-23 07:42:49,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436823874] [2020-12-23 07:42:49,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 07:42:49,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:49,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 07:42:49,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:42:49,471 INFO L87 Difference]: Start difference. First operand 468 states and 571 transitions. Second operand 17 states. [2020-12-23 07:42:51,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:51,078 INFO L93 Difference]: Finished difference Result 604 states and 722 transitions. [2020-12-23 07:42:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-23 07:42:51,080 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-12-23 07:42:51,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:51,082 INFO L225 Difference]: With dead ends: 604 [2020-12-23 07:42:51,083 INFO L226 Difference]: Without dead ends: 594 [2020-12-23 07:42:51,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 07:42:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-12-23 07:42:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 489. [2020-12-23 07:42:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-23 07:42:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 595 transitions. [2020-12-23 07:42:51,168 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 595 transitions. Word has length 46 [2020-12-23 07:42:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:51,169 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 595 transitions. [2020-12-23 07:42:51,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 07:42:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 595 transitions. [2020-12-23 07:42:51,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:42:51,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:51,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:51,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:42:51,384 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:51,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2020-12-23 07:42:51,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:51,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319187160] [2020-12-23 07:42:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:51,394 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:51,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175150094] [2020-12-23 07:42:51,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:51,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:42:51,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:42:51,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 07:42:51,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:51,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319187160] [2020-12-23 07:42:51,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:51,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175150094] [2020-12-23 07:42:51,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:51,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-23 07:42:51,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718581382] [2020-12-23 07:42:51,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 07:42:51,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:51,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 07:42:51,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:42:51,885 INFO L87 Difference]: Start difference. First operand 489 states and 595 transitions. Second operand 17 states. [2020-12-23 07:42:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:42:59,214 INFO L93 Difference]: Finished difference Result 633 states and 755 transitions. [2020-12-23 07:42:59,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 07:42:59,215 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-12-23 07:42:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:42:59,219 INFO L225 Difference]: With dead ends: 633 [2020-12-23 07:42:59,219 INFO L226 Difference]: Without dead ends: 629 [2020-12-23 07:42:59,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 07:42:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-12-23 07:42:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 507. [2020-12-23 07:42:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-12-23 07:42:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 615 transitions. [2020-12-23 07:42:59,313 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 615 transitions. Word has length 46 [2020-12-23 07:42:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:42:59,313 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 615 transitions. [2020-12-23 07:42:59,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 07:42:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 615 transitions. [2020-12-23 07:42:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 07:42:59,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:42:59,314 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:42:59,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:59,528 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:42:59,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:42:59,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2020-12-23 07:42:59,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:42:59,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380738035] [2020-12-23 07:42:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:42:59,543 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:42:59,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284915848] [2020-12-23 07:42:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:42:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:42:59,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:42:59,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:42:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:42:59,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380738035] [2020-12-23 07:42:59,870 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:42:59,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284915848] [2020-12-23 07:42:59,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:42:59,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:42:59,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622549843] [2020-12-23 07:42:59,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:42:59,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:42:59,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:42:59,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:42:59,872 INFO L87 Difference]: Start difference. First operand 507 states and 615 transitions. Second operand 13 states. [2020-12-23 07:43:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:43:00,885 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2020-12-23 07:43:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 07:43:00,886 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-12-23 07:43:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:43:00,889 INFO L225 Difference]: With dead ends: 723 [2020-12-23 07:43:00,889 INFO L226 Difference]: Without dead ends: 721 [2020-12-23 07:43:00,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 07:43:00,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-12-23 07:43:01,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 603. [2020-12-23 07:43:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-12-23 07:43:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 729 transitions. [2020-12-23 07:43:01,009 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 729 transitions. Word has length 49 [2020-12-23 07:43:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:43:01,009 INFO L481 AbstractCegarLoop]: Abstraction has 603 states and 729 transitions. [2020-12-23 07:43:01,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:43:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 729 transitions. [2020-12-23 07:43:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 07:43:01,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:43:01,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:43:01,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 07:43:01,227 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:43:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:43:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1323606593, now seen corresponding path program 3 times [2020-12-23 07:43:01,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:43:01,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187918864] [2020-12-23 07:43:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:43:01,236 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:43:01,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328202622] [2020-12-23 07:43:01,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:01,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:43:01,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:43:01,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-23 07:43:01,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:43:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 07:43:01,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187918864] [2020-12-23 07:43:01,648 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:43:01,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328202622] [2020-12-23 07:43:01,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:43:01,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:43:01,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336162908] [2020-12-23 07:43:01,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:43:01,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:43:01,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:43:01,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:43:01,649 INFO L87 Difference]: Start difference. First operand 603 states and 729 transitions. Second operand 12 states. [2020-12-23 07:43:06,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:43:06,545 INFO L93 Difference]: Finished difference Result 752 states and 897 transitions. [2020-12-23 07:43:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:43:06,546 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-12-23 07:43:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:43:06,549 INFO L225 Difference]: With dead ends: 752 [2020-12-23 07:43:06,550 INFO L226 Difference]: Without dead ends: 744 [2020-12-23 07:43:06,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:43:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-12-23 07:43:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 620. [2020-12-23 07:43:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-12-23 07:43:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 748 transitions. [2020-12-23 07:43:06,677 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 748 transitions. Word has length 50 [2020-12-23 07:43:06,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:43:06,678 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 748 transitions. [2020-12-23 07:43:06,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:43:06,678 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 748 transitions. [2020-12-23 07:43:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 07:43:06,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:43:06,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:43:06,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:06,893 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:43:06,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:43:06,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1449773808, now seen corresponding path program 3 times [2020-12-23 07:43:06,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:43:06,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287865221] [2020-12-23 07:43:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:43:06,902 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:43:06,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477737791] [2020-12-23 07:43:06,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:06,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:43:06,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:43:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 07:43:06,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:43:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 07:43:09,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287865221] [2020-12-23 07:43:09,565 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:43:09,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477737791] [2020-12-23 07:43:09,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:43:09,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:43:09,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435689559] [2020-12-23 07:43:09,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:43:09,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:43:09,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:43:09,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2020-12-23 07:43:09,567 INFO L87 Difference]: Start difference. First operand 620 states and 748 transitions. Second operand 8 states. [2020-12-23 07:44:46,632 WARN L197 SmtUtils]: Spent 20.10 s on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2020-12-23 07:45:22,174 WARN L197 SmtUtils]: Spent 18.18 s on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-12-23 07:45:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:45:48,749 INFO L93 Difference]: Finished difference Result 635 states and 758 transitions. [2020-12-23 07:45:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 07:45:48,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-12-23 07:45:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:45:48,753 INFO L225 Difference]: With dead ends: 635 [2020-12-23 07:45:48,753 INFO L226 Difference]: Without dead ends: 633 [2020-12-23 07:45:48,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 91.6s TimeCoverageRelationStatistics Valid=102, Invalid=217, Unknown=23, NotChecked=0, Total=342 [2020-12-23 07:45:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-12-23 07:45:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 443. [2020-12-23 07:45:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-12-23 07:45:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 529 transitions. [2020-12-23 07:45:48,848 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 529 transitions. Word has length 50 [2020-12-23 07:45:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:45:48,848 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 529 transitions. [2020-12-23 07:45:48,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:45:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 529 transitions. [2020-12-23 07:45:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 07:45:48,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:45:48,849 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:45:49,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 07:45:49,050 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:45:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:45:49,051 INFO L82 PathProgramCache]: Analyzing trace with hash 272025232, now seen corresponding path program 2 times [2020-12-23 07:45:49,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:45:49,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151583092] [2020-12-23 07:45:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:45:49,059 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:45:49,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188147062] [2020-12-23 07:45:49,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:45:49,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:45:49,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:45:49,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:45:49,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:45:49,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151583092] [2020-12-23 07:45:49,906 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:45:49,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188147062] [2020-12-23 07:45:49,907 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:45:49,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:45:49,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:45:49,907 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:45:49,907 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:45:50,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 07:45:50,164 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:45:50,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:45:50 BoogieIcfgContainer [2020-12-23 07:45:50,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:45:50,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:45:50,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:45:50,166 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:45:50,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:42:25" (3/4) ... [2020-12-23 07:45:50,174 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:45:50,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:45:50,181 INFO L168 Benchmark]: Toolchain (without parser) took 205522.32 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 125.8 MB in the beginning and 240.6 MB in the end (delta: -114.8 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:50,182 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:45:50,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:50,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.60 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:50,184 INFO L168 Benchmark]: Boogie Preprocessor took 27.70 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:50,185 INFO L168 Benchmark]: RCFGBuilder took 603.56 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 128.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:50,185 INFO L168 Benchmark]: TraceAbstraction took 204444.26 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 128.1 MB in the beginning and 241.1 MB in the end (delta: -113.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:50,185 INFO L168 Benchmark]: Witness Printer took 8.96 ms. Allocated memory is still 314.6 MB. Free memory was 241.1 MB in the beginning and 240.6 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:50,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 382.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.60 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.70 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 603.56 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 128.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 204444.26 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 128.1 MB in the beginning and 241.1 MB in the end (delta: -113.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 8.0 GB. * Witness Printer took 8.96 ms. Allocated memory is still 314.6 MB. Free memory was 241.1 MB in the beginning and 240.6 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int x, y; [L20] long long a, b, p, q, r, s; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 204.3s, OverallIterations: 27, TraceHistogramMax: 5, AutomataDifference: 185.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 993 SDtfs, 4133 SDslu, 4170 SDs, 0 SdLazy, 5925 SolverSat, 714 SolverUnsat, 38 SolverUnknown, 0 SolverNotchecked, 84.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1076 GetRequests, 622 SyntacticMatches, 4 SemanticMatches, 450 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2355 ImplicationChecksByTransitivity, 104.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=620occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 1563 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 845 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 819 ConstructedInterpolants, 0 QuantifiedInterpolants, 337378 SizeOfPredicates, 320 NumberOfNonLiveVariables, 3338 ConjunctsInSsa, 824 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 86/340 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...