/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:38:52,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:38:52,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:38:52,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:38:52,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:38:52,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:38:52,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:38:52,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:38:52,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:38:52,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:38:52,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:38:52,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:38:52,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:38:52,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:38:52,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:38:52,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:38:52,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:38:52,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:38:52,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:38:52,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:38:52,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:38:52,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:38:52,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:38:52,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:38:52,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:38:52,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:38:52,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:38:52,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:38:52,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:38:52,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:38:52,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:38:52,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:38:52,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:38:52,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:38:52,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:38:52,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:38:52,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:38:52,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:38:52,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:38:52,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:38:52,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:38:52,974 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:38:52,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:38:52,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:38:52,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:38:52,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:38:52,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:38:52,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:38:52,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:38:52,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:38:52,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:38:52,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:38:52,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:38:52,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:38:52,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:38:52,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:38:52,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:38:52,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:38:52,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:38:52,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:38:52,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:38:52,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:38:52,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:38:53,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:38:53,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:38:53,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:38:53,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:38:53,430 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:38:53,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c [2020-12-23 07:38:53,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d8e865d8a/1a2deb4ccb464758958557a21d1505a2/FLAGd277c1e29 [2020-12-23 07:38:54,149 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:38:54,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c [2020-12-23 07:38:54,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d8e865d8a/1a2deb4ccb464758958557a21d1505a2/FLAGd277c1e29 [2020-12-23 07:38:54,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d8e865d8a/1a2deb4ccb464758958557a21d1505a2 [2020-12-23 07:38:54,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:38:54,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:38:54,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:38:54,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:38:54,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:38:54,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a26219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54, skipping insertion in model container [2020-12-23 07:38:54,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:38:54,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:38:54,665 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:38:54,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:38:54,702 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:38:54,716 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:38:54,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:38:54,749 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:38:54,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54 WrapperNode [2020-12-23 07:38:54,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:38:54,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:38:54,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:38:54,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:38:54,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:38:54,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:38:54,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:38:54,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:38:54,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... [2020-12-23 07:38:54,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:38:54,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:38:54,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:38:54,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:38:54,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:38:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:38:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:38:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:38:54,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:38:55,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:38:55,644 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-23 07:38:55,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:38:55 BoogieIcfgContainer [2020-12-23 07:38:55,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:38:55,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:38:55,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:38:55,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:38:55,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:38:54" (1/3) ... [2020-12-23 07:38:55,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a56e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:38:55, skipping insertion in model container [2020-12-23 07:38:55,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:54" (2/3) ... [2020-12-23 07:38:55,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a56e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:38:55, skipping insertion in model container [2020-12-23 07:38:55,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:38:55" (3/3) ... [2020-12-23 07:38:55,663 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound10.c [2020-12-23 07:38:55,670 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:38:55,675 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 07:38:55,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 07:38:55,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:38:55,746 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:38:55,746 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:38:55,747 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:38:55,747 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:38:55,747 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:38:55,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:38:55,747 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:38:55,771 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-12-23 07:38:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:38:55,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:55,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:55,781 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:55,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:55,789 INFO L82 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2020-12-23 07:38:55,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:55,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12731809] [2020-12-23 07:38:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:56,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12731809] [2020-12-23 07:38:56,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:56,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:38:56,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286732207] [2020-12-23 07:38:56,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:38:56,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:56,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:38:56,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:38:56,065 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-12-23 07:38:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:56,087 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2020-12-23 07:38:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:38:56,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-12-23 07:38:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:56,099 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:38:56,099 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:38:56,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:38:56,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:38:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 07:38:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:38:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-12-23 07:38:56,143 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2020-12-23 07:38:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:56,143 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-12-23 07:38:56,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:38:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-12-23 07:38:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:38:56,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:56,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:56,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:38:56,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:56,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2020-12-23 07:38:56,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:56,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052695926] [2020-12-23 07:38:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:56,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:56,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595367772] [2020-12-23 07:38:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:56,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:38:56,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:56,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052695926] [2020-12-23 07:38:56,367 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:56,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595367772] [2020-12-23 07:38:56,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:56,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:38:56,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708368420] [2020-12-23 07:38:56,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:38:56,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:56,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:38:56,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:38:56,371 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 5 states. [2020-12-23 07:38:56,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:56,502 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-12-23 07:38:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:38:56,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:38:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:56,504 INFO L225 Difference]: With dead ends: 69 [2020-12-23 07:38:56,504 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:38:56,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:38:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:38:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-12-23 07:38:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 07:38:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-23 07:38:56,516 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2020-12-23 07:38:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:56,516 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-23 07:38:56,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:38:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-23 07:38:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:38:56,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:56,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:56,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:38:56,732 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:56,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2020-12-23 07:38:56,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:56,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985202660] [2020-12-23 07:38:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:56,756 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:56,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082680395] [2020-12-23 07:38:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:56,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:38:56,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:56,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985202660] [2020-12-23 07:38:56,953 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:56,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082680395] [2020-12-23 07:38:56,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:56,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:38:56,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207488107] [2020-12-23 07:38:56,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:38:56,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:56,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:38:56,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:38:56,957 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 8 states. [2020-12-23 07:38:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:57,288 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2020-12-23 07:38:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:38:57,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-23 07:38:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:57,290 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:38:57,290 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 07:38:57,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:38:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 07:38:57,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2020-12-23 07:38:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:38:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-12-23 07:38:57,301 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2020-12-23 07:38:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:57,302 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-12-23 07:38:57,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:38:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-12-23 07:38:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:38:57,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:57,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:57,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:57,518 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:57,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2020-12-23 07:38:57,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:57,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982549978] [2020-12-23 07:38:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:57,548 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:57,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53967472] [2020-12-23 07:38:57,549 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 07:38:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:57,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:38:57,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:57,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982549978] [2020-12-23 07:38:57,875 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:57,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53967472] [2020-12-23 07:38:57,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:57,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 07:38:57,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744181543] [2020-12-23 07:38:57,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:38:57,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:38:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:38:57,880 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2020-12-23 07:38:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:58,296 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-12-23 07:38:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:38:58,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-23 07:38:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:58,301 INFO L225 Difference]: With dead ends: 63 [2020-12-23 07:38:58,301 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:38:58,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:38:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:38:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-12-23 07:38:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:38:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-23 07:38:58,324 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2020-12-23 07:38:58,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:58,324 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-23 07:38:58,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:38:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-23 07:38:58,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:38:58,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:58,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:58,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:58,541 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:58,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:58,542 INFO L82 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2020-12-23 07:38:58,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:58,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240006442] [2020-12-23 07:38:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:58,580 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:58,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578863281] [2020-12-23 07:38:58,581 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 07:38:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:58,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:38:58,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:58,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240006442] [2020-12-23 07:38:58,788 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:58,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578863281] [2020-12-23 07:38:58,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:58,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:38:58,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706568328] [2020-12-23 07:38:58,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:38:58,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:58,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:38:58,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:38:58,790 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 8 states. [2020-12-23 07:38:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:58,979 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-12-23 07:38:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:38:58,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-23 07:38:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:58,981 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:38:58,981 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:38:58,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:38:58,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:38:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-12-23 07:38:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:38:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-23 07:38:58,990 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2020-12-23 07:38:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:58,990 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-23 07:38:58,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:38:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-23 07:38:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:38:58,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:58,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:59,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:59,206 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:59,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2020-12-23 07:38:59,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:59,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304079596] [2020-12-23 07:38:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:59,222 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:59,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703070001] [2020-12-23 07:38:59,223 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 07:38:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:59,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:38:59,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:59,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304079596] [2020-12-23 07:38:59,455 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:59,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703070001] [2020-12-23 07:38:59,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:59,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:38:59,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562017939] [2020-12-23 07:38:59,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:38:59,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:59,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:38:59,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:38:59,457 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2020-12-23 07:39:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:01,689 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-12-23 07:39:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:39:01,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-23 07:39:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:01,690 INFO L225 Difference]: With dead ends: 63 [2020-12-23 07:39:01,690 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:39:01,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:39:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:39:01,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-12-23 07:39:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:39:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-12-23 07:39:01,700 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2020-12-23 07:39:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:01,700 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-12-23 07:39:01,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:39:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-12-23 07:39:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:39:01,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:01,701 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:01,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:39:01,916 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:01,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2020-12-23 07:39:01,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:01,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130132428] [2020-12-23 07:39:01,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:01,937 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:01,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415270944] [2020-12-23 07:39:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:02,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:39:02,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:02,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130132428] [2020-12-23 07:39:02,076 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:02,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415270944] [2020-12-23 07:39:02,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:02,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:39:02,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098890138] [2020-12-23 07:39:02,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:39:02,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:02,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:39:02,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:39:02,078 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-12-23 07:39:02,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:02,261 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-12-23 07:39:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:39:02,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:39:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:02,263 INFO L225 Difference]: With dead ends: 104 [2020-12-23 07:39:02,263 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:39:02,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:39:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2020-12-23 07:39:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:39:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-23 07:39:02,278 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 27 [2020-12-23 07:39:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:02,279 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-23 07:39:02,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:39:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-23 07:39:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:39:02,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:02,280 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:02,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:02,496 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2020-12-23 07:39:02,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:02,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459958490] [2020-12-23 07:39:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:02,512 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:02,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396982224] [2020-12-23 07:39:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:02,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:39:02,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:02,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459958490] [2020-12-23 07:39:02,719 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:02,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396982224] [2020-12-23 07:39:02,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:02,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:39:02,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117458550] [2020-12-23 07:39:02,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:39:02,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:02,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:39:02,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:02,722 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2020-12-23 07:39:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:02,952 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2020-12-23 07:39:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:39:02,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-23 07:39:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:02,954 INFO L225 Difference]: With dead ends: 165 [2020-12-23 07:39:02,955 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 07:39:02,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:39:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 07:39:02,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 109. [2020-12-23 07:39:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 07:39:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2020-12-23 07:39:03,001 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 30 [2020-12-23 07:39:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:03,001 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2020-12-23 07:39:03,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:39:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2020-12-23 07:39:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:39:03,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:03,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:03,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:03,221 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:03,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2020-12-23 07:39:03,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:03,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80378918] [2020-12-23 07:39:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:03,248 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:03,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015159262] [2020-12-23 07:39:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:03,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:39:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:03,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80378918] [2020-12-23 07:39:03,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:03,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015159262] [2020-12-23 07:39:03,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:03,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:39:03,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563471862] [2020-12-23 07:39:03,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:39:03,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:39:03,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:39:03,501 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand 8 states. [2020-12-23 07:39:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:03,716 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2020-12-23 07:39:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:39:03,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 07:39:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:03,719 INFO L225 Difference]: With dead ends: 176 [2020-12-23 07:39:03,719 INFO L226 Difference]: Without dead ends: 170 [2020-12-23 07:39:03,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-23 07:39:03,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2020-12-23 07:39:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2020-12-23 07:39:03,741 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 32 [2020-12-23 07:39:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:03,741 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2020-12-23 07:39:03,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:39:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2020-12-23 07:39:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:39:03,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:03,743 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:03,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:39:03,958 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2020-12-23 07:39:03,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:03,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405775432] [2020-12-23 07:39:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:03,986 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:03,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267275833] [2020-12-23 07:39:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:04,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-23 07:39:04,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:04,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405775432] [2020-12-23 07:39:04,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:04,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267275833] [2020-12-23 07:39:04,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:04,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:39:04,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43217765] [2020-12-23 07:39:04,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:39:04,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:04,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:39:04,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:39:04,602 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand 16 states. [2020-12-23 07:39:05,019 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 24 [2020-12-23 07:39:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:05,482 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2020-12-23 07:39:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 07:39:05,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-12-23 07:39:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:05,484 INFO L225 Difference]: With dead ends: 167 [2020-12-23 07:39:05,484 INFO L226 Difference]: Without dead ends: 165 [2020-12-23 07:39:05,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:39:05,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-12-23 07:39:05,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-12-23 07:39:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2020-12-23 07:39:05,508 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 34 [2020-12-23 07:39:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:05,508 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2020-12-23 07:39:05,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:39:05,509 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2020-12-23 07:39:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:39:05,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:05,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:05,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:05,724 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:05,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2020-12-23 07:39:05,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:05,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79848719] [2020-12-23 07:39:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:05,754 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:05,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018431804] [2020-12-23 07:39:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:05,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:39:05,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:06,225 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:39:06,247 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:39:06,255 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:39:06,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:06,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79848719] [2020-12-23 07:39:06,307 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:06,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018431804] [2020-12-23 07:39:06,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:06,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:39:06,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456917513] [2020-12-23 07:39:06,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:39:06,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:06,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:39:06,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:39:06,311 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand 12 states. [2020-12-23 07:39:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:06,814 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2020-12-23 07:39:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:39:06,815 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-12-23 07:39:06,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:06,816 INFO L225 Difference]: With dead ends: 172 [2020-12-23 07:39:06,816 INFO L226 Difference]: Without dead ends: 170 [2020-12-23 07:39:06,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:39:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-23 07:39:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2020-12-23 07:39:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2020-12-23 07:39:06,840 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 36 [2020-12-23 07:39:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:06,840 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2020-12-23 07:39:06,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:39:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2020-12-23 07:39:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:39:06,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:06,841 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:07,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:07,055 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:07,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:07,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2020-12-23 07:39:07,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:07,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779186249] [2020-12-23 07:39:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:07,083 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:07,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24201913] [2020-12-23 07:39:07,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:07,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:07,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:07,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:39:07,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:07,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779186249] [2020-12-23 07:39:07,326 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:07,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24201913] [2020-12-23 07:39:07,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:07,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:39:07,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551549947] [2020-12-23 07:39:07,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:39:07,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:39:07,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:07,328 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand 10 states. [2020-12-23 07:39:07,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:07,632 INFO L93 Difference]: Finished difference Result 264 states and 318 transitions. [2020-12-23 07:39:07,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:39:07,633 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-23 07:39:07,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:07,635 INFO L225 Difference]: With dead ends: 264 [2020-12-23 07:39:07,635 INFO L226 Difference]: Without dead ends: 262 [2020-12-23 07:39:07,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-12-23 07:39:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2020-12-23 07:39:07,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 07:39:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 248 transitions. [2020-12-23 07:39:07,670 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 248 transitions. Word has length 36 [2020-12-23 07:39:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:07,670 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 248 transitions. [2020-12-23 07:39:07,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:39:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 248 transitions. [2020-12-23 07:39:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:39:07,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:07,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:07,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:39:07,887 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2020-12-23 07:39:07,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:07,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396303971] [2020-12-23 07:39:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:07,902 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:07,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234390543] [2020-12-23 07:39:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:07,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 07:39:07,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:08,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396303971] [2020-12-23 07:39:08,393 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:08,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234390543] [2020-12-23 07:39:08,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:08,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:39:08,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644277364] [2020-12-23 07:39:08,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:39:08,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:08,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:39:08,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:08,398 INFO L87 Difference]: Start difference. First operand 202 states and 248 transitions. Second operand 13 states. [2020-12-23 07:39:09,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:09,090 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-12-23 07:39:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:39:09,091 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-23 07:39:09,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:09,092 INFO L225 Difference]: With dead ends: 247 [2020-12-23 07:39:09,092 INFO L226 Difference]: Without dead ends: 241 [2020-12-23 07:39:09,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:39:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-23 07:39:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 234. [2020-12-23 07:39:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-23 07:39:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2020-12-23 07:39:09,128 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 39 [2020-12-23 07:39:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:09,128 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2020-12-23 07:39:09,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:39:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2020-12-23 07:39:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:39:09,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:09,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:09,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:39:09,345 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:09,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:09,346 INFO L82 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2020-12-23 07:39:09,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:09,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816384823] [2020-12-23 07:39:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:09,357 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:09,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282848726] [2020-12-23 07:39:09,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:09,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:09,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:09,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:39:09,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:09,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816384823] [2020-12-23 07:39:09,516 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:09,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282848726] [2020-12-23 07:39:09,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:09,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:39:09,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198297194] [2020-12-23 07:39:09,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:39:09,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:09,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:39:09,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:39:09,521 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand 5 states. [2020-12-23 07:39:11,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:11,743 INFO L93 Difference]: Finished difference Result 302 states and 365 transitions. [2020-12-23 07:39:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:39:11,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-23 07:39:11,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:11,746 INFO L225 Difference]: With dead ends: 302 [2020-12-23 07:39:11,746 INFO L226 Difference]: Without dead ends: 210 [2020-12-23 07:39:11,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-12-23 07:39:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 190. [2020-12-23 07:39:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-12-23 07:39:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions. [2020-12-23 07:39:11,780 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 44 [2020-12-23 07:39:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:11,781 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 221 transitions. [2020-12-23 07:39:11,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:39:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions. [2020-12-23 07:39:11,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:39:11,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:11,782 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:11,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:39:11,996 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash 75787250, now seen corresponding path program 1 times [2020-12-23 07:39:11,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:11,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681578056] [2020-12-23 07:39:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:12,015 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:12,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783001038] [2020-12-23 07:39:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:12,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-23 07:39:12,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:12,900 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:39:12,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:39:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:12,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681578056] [2020-12-23 07:39:12,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:12,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783001038] [2020-12-23 07:39:12,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:12,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:39:12,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982102653] [2020-12-23 07:39:12,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:39:12,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:12,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:39:12,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:39:12,954 INFO L87 Difference]: Start difference. First operand 190 states and 221 transitions. Second operand 15 states. [2020-12-23 07:39:31,664 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-23 07:39:32,031 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-23 07:39:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:42,707 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2020-12-23 07:39:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:39:42,708 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-12-23 07:39:42,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:42,709 INFO L225 Difference]: With dead ends: 201 [2020-12-23 07:39:42,710 INFO L226 Difference]: Without dead ends: 199 [2020-12-23 07:39:42,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:39:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-12-23 07:39:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 158. [2020-12-23 07:39:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-23 07:39:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2020-12-23 07:39:42,734 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 45 [2020-12-23 07:39:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:42,734 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2020-12-23 07:39:42,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:39:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2020-12-23 07:39:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:39:42,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:42,735 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:42,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:42,950 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:42,951 INFO L82 PathProgramCache]: Analyzing trace with hash -397708876, now seen corresponding path program 3 times [2020-12-23 07:39:42,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:42,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269348570] [2020-12-23 07:39:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:42,965 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:42,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252370651] [2020-12-23 07:39:42,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:43,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:39:43,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:43,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:39:43,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 07:39:43,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269348570] [2020-12-23 07:39:43,127 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:43,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252370651] [2020-12-23 07:39:43,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:43,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:39:43,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546426754] [2020-12-23 07:39:43,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:39:43,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:43,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:39:43,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:39:43,129 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand 5 states. [2020-12-23 07:39:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:43,262 INFO L93 Difference]: Finished difference Result 158 states and 183 transitions. [2020-12-23 07:39:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:39:43,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-23 07:39:43,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:43,264 INFO L225 Difference]: With dead ends: 158 [2020-12-23 07:39:43,264 INFO L226 Difference]: Without dead ends: 156 [2020-12-23 07:39:43,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:39:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-23 07:39:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 121. [2020-12-23 07:39:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-23 07:39:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2020-12-23 07:39:43,284 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 45 [2020-12-23 07:39:43,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:43,284 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2020-12-23 07:39:43,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:39:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2020-12-23 07:39:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 07:39:43,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:43,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:43,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:39:43,501 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:43,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2020-12-23 07:39:43,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:43,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511621013] [2020-12-23 07:39:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:43,526 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:43,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278370628] [2020-12-23 07:39:43,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:43,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:43,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:43,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-23 07:39:43,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:44,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511621013] [2020-12-23 07:39:44,001 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:44,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278370628] [2020-12-23 07:39:44,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:44,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:39:44,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776734871] [2020-12-23 07:39:44,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:39:44,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:44,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:39:44,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:44,008 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand 13 states. [2020-12-23 07:39:47,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:47,073 INFO L93 Difference]: Finished difference Result 161 states and 179 transitions. [2020-12-23 07:39:47,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:39:47,074 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-12-23 07:39:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:47,076 INFO L225 Difference]: With dead ends: 161 [2020-12-23 07:39:47,076 INFO L226 Difference]: Without dead ends: 155 [2020-12-23 07:39:47,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:39:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-23 07:39:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2020-12-23 07:39:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-23 07:39:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2020-12-23 07:39:47,111 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 48 [2020-12-23 07:39:47,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:47,111 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2020-12-23 07:39:47,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:39:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2020-12-23 07:39:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 07:39:47,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:47,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:47,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:39:47,326 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:47,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:47,327 INFO L82 PathProgramCache]: Analyzing trace with hash 194484878, now seen corresponding path program 3 times [2020-12-23 07:39:47,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:47,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339332034] [2020-12-23 07:39:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:47,337 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:47,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394066763] [2020-12-23 07:39:47,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true