./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06e263f62ccb25342881e7c795aa9241a1fa8bd0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 15:41:25,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 15:41:25,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 15:41:25,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 15:41:25,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 15:41:25,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 15:41:25,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 15:41:25,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 15:41:25,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 15:41:25,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 15:41:25,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 15:41:25,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 15:41:25,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 15:41:25,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 15:41:25,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 15:41:25,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 15:41:25,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 15:41:25,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 15:41:25,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 15:41:25,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 15:41:25,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 15:41:25,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 15:41:25,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 15:41:25,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 15:41:25,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 15:41:25,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 15:41:25,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 15:41:25,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 15:41:25,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 15:41:25,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 15:41:25,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 15:41:25,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 15:41:25,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 15:41:25,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 15:41:25,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 15:41:25,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 15:41:25,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 15:41:25,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 15:41:25,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 15:41:25,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 15:41:25,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 15:41:25,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-07-06 15:41:26,002 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 15:41:26,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 15:41:26,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 15:41:26,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 15:41:26,003 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 15:41:26,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 15:41:26,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 15:41:26,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 15:41:26,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 15:41:26,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 15:41:26,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 15:41:26,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 15:41:26,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 15:41:26,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 15:41:26,004 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 15:41:26,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 15:41:26,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 15:41:26,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 15:41:26,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 15:41:26,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 15:41:26,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 15:41:26,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 15:41:26,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:41:26,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 15:41:26,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 15:41:26,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 15:41:26,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 15:41:26,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 15:41:26,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 15:41:26,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 15:41:26,007 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06e263f62ccb25342881e7c795aa9241a1fa8bd0 [2021-07-06 15:41:26,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 15:41:26,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 15:41:26,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 15:41:26,271 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 15:41:26,272 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 15:41:26,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c [2021-07-06 15:41:26,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44957d690/634b5c80975a4b41bba3bfa0cb7bce4e/FLAG8e07f5663 [2021-07-06 15:41:26,674 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 15:41:26,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b5_o10-2.c [2021-07-06 15:41:26,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44957d690/634b5c80975a4b41bba3bfa0cb7bce4e/FLAG8e07f5663 [2021-07-06 15:41:26,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44957d690/634b5c80975a4b41bba3bfa0cb7bce4e [2021-07-06 15:41:26,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 15:41:26,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 15:41:26,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 15:41:26,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 15:41:26,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 15:41:26,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7602e36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26, skipping insertion in model container [2021-07-06 15:41:26,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 15:41:26,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 15:41:26,833 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b5_o10-2.c[530,543] [2021-07-06 15:41:26,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:41:26,839 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 15:41:26,849 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b5_o10-2.c[530,543] [2021-07-06 15:41:26,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:41:26,859 INFO L208 MainTranslator]: Completed translation [2021-07-06 15:41:26,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26 WrapperNode [2021-07-06 15:41:26,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 15:41:26,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 15:41:26,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 15:41:26,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 15:41:26,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 15:41:26,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 15:41:26,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 15:41:26,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 15:41:26,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 15:41:26,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 15:41:26,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 15:41:26,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 15:41:26,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (1/1) ... [2021-07-06 15:41:26,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:41:26,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:41:26,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-06 15:41:26,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-06 15:41:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 15:41:26,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 15:41:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 15:41:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-07-06 15:41:26,991 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-07-06 15:41:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 15:41:27,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 15:41:27,176 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-07-06 15:41:27,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:41:27 BoogieIcfgContainer [2021-07-06 15:41:27,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 15:41:27,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 15:41:27,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 15:41:27,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 15:41:27,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 03:41:26" (1/3) ... [2021-07-06 15:41:27,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71faa7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:41:27, skipping insertion in model container [2021-07-06 15:41:27,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:41:26" (2/3) ... [2021-07-06 15:41:27,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71faa7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:41:27, skipping insertion in model container [2021-07-06 15:41:27,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:41:27" (3/3) ... [2021-07-06 15:41:27,183 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2021-07-06 15:41:27,187 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 15:41:27,187 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-06 15:41:27,219 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:41:27,224 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:41:27,225 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:41:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 15:41:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 15:41:27,238 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:41:27,244 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:41:27,244 INFO L374 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:41:27,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:41:27,249 INFO L82 PathProgramCache]: Analyzing trace with hash -12839543, now seen corresponding path program 1 times [2021-07-06 15:41:27,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:41:27,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159469731] [2021-07-06 15:41:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:41:27,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:41:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 15:41:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:41:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-06 15:41:27,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:41:27,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159469731] [2021-07-06 15:41:27,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159469731] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:41:27,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:41:27,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 15:41:27,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205491840] [2021-07-06 15:41:27,498 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 15:41:27,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:41:27,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 15:41:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:41:27,521 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 15:41:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:41:27,578 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-07-06 15:41:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 15:41:27,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-07-06 15:41:27,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:41:27,585 INFO L225 Difference]: With dead ends: 30 [2021-07-06 15:41:27,585 INFO L226 Difference]: Without dead ends: 18 [2021-07-06 15:41:27,587 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:41:27,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-07-06 15:41:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-07-06 15:41:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-07-06 15:41:27,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-07-06 15:41:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:41:27,611 INFO L442 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-07-06 15:41:27,611 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 15:41:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-07-06 15:41:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-07-06 15:41:27,612 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:41:27,612 INFO L525 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:41:27,612 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 15:41:27,613 INFO L374 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:41:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:41:27,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1211021997, now seen corresponding path program 1 times [2021-07-06 15:41:27,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:41:27,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349526496] [2021-07-06 15:41:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:41:27,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:41:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 15:41:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 15:41:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-06 15:41:27,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:41:27,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349526496] [2021-07-06 15:41:27,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349526496] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:41:27,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:41:27,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 15:41:27,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34003926] [2021-07-06 15:41:27,700 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 15:41:27,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:41:27,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 15:41:27,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 15:41:27,701 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:41:27,722 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-07-06 15:41:27,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 15:41:27,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-07-06 15:41:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:41:27,724 INFO L225 Difference]: With dead ends: 28 [2021-07-06 15:41:27,724 INFO L226 Difference]: Without dead ends: 21 [2021-07-06 15:41:27,725 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 15:41:27,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-07-06 15:41:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-07-06 15:41:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-07-06 15:41:27,728 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 21 [2021-07-06 15:41:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:41:27,728 INFO L442 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-07-06 15:41:27,728 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-07-06 15:41:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-06 15:41:27,729 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:41:27,729 INFO L525 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:41:27,729 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 15:41:27,730 INFO L374 AbstractCegarLoop]: === Iteration 3 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:41:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:41:27,730 INFO L82 PathProgramCache]: Analyzing trace with hash -561605965, now seen corresponding path program 1 times [2021-07-06 15:41:27,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:41:27,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740488251] [2021-07-06 15:41:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:41:27,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:41:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-06 15:41:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 15:41:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-07-06 15:41:27,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:41:27,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740488251] [2021-07-06 15:41:27,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740488251] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-06 15:41:27,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471182962] [2021-07-06 15:41:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:41:27,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-06 15:41:27,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:41:27,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-07-06 15:41:27,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-06 15:41:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:27,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-06 15:41:27,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 15:41:27,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:27,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:41:27,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:41:27,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 15:41:27,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:41:27,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:41:27,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 15:41:27,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:41:27,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 15:41:27,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 15:41:27,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:41:27,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 15:41:27,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 15:41:27,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:41:27,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:41:27,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:41:27,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 15:41:27,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:27,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:41:27,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:41:27,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 15:41:27,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:27,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:41:27,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:41:28,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 15:41:28,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-07-06 15:41:28,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471182962] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-06 15:41:28,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-06 15:41:28,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-07-06 15:41:28,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491520190] [2021-07-06 15:41:28,014 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 15:41:28,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:41:28,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 15:41:28,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-06 15:41:28,016 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:41:28,048 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-07-06 15:41:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 15:41:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-07-06 15:41:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:41:28,049 INFO L225 Difference]: With dead ends: 25 [2021-07-06 15:41:28,049 INFO L226 Difference]: Without dead ends: 24 [2021-07-06 15:41:28,049 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-06 15:41:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-07-06 15:41:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-07-06 15:41:28,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 15:41:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-07-06 15:41:28,052 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 24 [2021-07-06 15:41:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:41:28,053 INFO L442 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-07-06 15:41:28,053 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-07-06 15:41:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-07-06 15:41:28,054 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:41:28,054 INFO L525 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:41:28,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-06 15:41:28,269 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-06 15:41:28,269 INFO L374 AbstractCegarLoop]: === Iteration 4 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:41:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:41:28,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2026545111, now seen corresponding path program 1 times [2021-07-06 15:41:28,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:41:28,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140219630] [2021-07-06 15:41:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:41:28,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:41:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-06 15:41:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 15:41:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 15:41:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-07-06 15:41:28,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:41:28,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140219630] [2021-07-06 15:41:28,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140219630] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:41:28,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:41:28,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 15:41:28,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720729607] [2021-07-06 15:41:28,319 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 15:41:28,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:41:28,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 15:41:28,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:41:28,321 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:28,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:41:28,330 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-07-06 15:41:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 15:41:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-07-06 15:41:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:41:28,331 INFO L225 Difference]: With dead ends: 23 [2021-07-06 15:41:28,331 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:41:28,332 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:41:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:41:28,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:41:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:41:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:41:28,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-07-06 15:41:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:41:28,333 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:41:28,334 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:41:28,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:41:28,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:41:28,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,345 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:41:28,345 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:41:28,345 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:41:28,345 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:41:28,345 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:41:28,345 INFO L762 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-07-06 15:41:28,346 INFO L765 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2021-07-06 15:41:28,346 INFO L762 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-07-06 15:41:28,346 INFO L762 garLoopResultBuilder]: For program point L13(lines 13 19) no Hoare annotation was computed. [2021-07-06 15:41:28,346 INFO L762 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2021-07-06 15:41:28,346 INFO L762 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2021-07-06 15:41:28,346 INFO L765 garLoopResultBuilder]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2021-07-06 15:41:28,346 INFO L762 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,346 INFO L762 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,346 INFO L762 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-07-06 15:41:28,347 INFO L765 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2021-07-06 15:41:28,347 INFO L762 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-07-06 15:41:28,347 INFO L762 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,347 INFO L762 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,347 INFO L762 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,347 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-06 15:41:28,347 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:41:28,350 INFO L303 ceAbstractionStarter]: Result for error location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (1/2) [2021-07-06 15:41:28,351 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:41:28,353 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:41:28,353 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:41:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 15:41:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 15:41:28,356 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:41:28,356 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:41:28,356 INFO L374 AbstractCegarLoop]: === Iteration 1 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:41:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:41:28,356 INFO L82 PathProgramCache]: Analyzing trace with hash -398025778, now seen corresponding path program 1 times [2021-07-06 15:41:28,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:41:28,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695366853] [2021-07-06 15:41:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:41:28,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:41:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 15:41:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:41:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-06 15:41:28,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:41:28,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695366853] [2021-07-06 15:41:28,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695366853] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:41:28,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:41:28,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 15:41:28,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921492864] [2021-07-06 15:41:28,394 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 15:41:28,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:41:28,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 15:41:28,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:41:28,395 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 15:41:28,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:41:28,407 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-07-06 15:41:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 15:41:28,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-07-06 15:41:28,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:41:28,408 INFO L225 Difference]: With dead ends: 30 [2021-07-06 15:41:28,408 INFO L226 Difference]: Without dead ends: 18 [2021-07-06 15:41:28,408 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:41:28,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-07-06 15:41:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-07-06 15:41:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-07-06 15:41:28,411 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2021-07-06 15:41:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:41:28,411 INFO L442 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-07-06 15:41:28,411 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 15:41:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-07-06 15:41:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-06 15:41:28,412 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:41:28,412 INFO L525 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:41:28,412 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-06 15:41:28,412 INFO L374 AbstractCegarLoop]: === Iteration 2 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:41:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:41:28,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1113023702, now seen corresponding path program 1 times [2021-07-06 15:41:28,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:41:28,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60005742] [2021-07-06 15:41:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:41:28,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:41:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 15:41:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 15:41:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:41:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-06 15:41:28,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:41:28,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60005742] [2021-07-06 15:41:28,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60005742] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:41:28,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:41:28,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 15:41:28,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457870236] [2021-07-06 15:41:28,454 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 15:41:28,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:41:28,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 15:41:28,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 15:41:28,455 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:41:28,468 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-07-06 15:41:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 15:41:28,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-07-06 15:41:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:41:28,469 INFO L225 Difference]: With dead ends: 28 [2021-07-06 15:41:28,469 INFO L226 Difference]: Without dead ends: 21 [2021-07-06 15:41:28,469 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 15:41:28,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-07-06 15:41:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-07-06 15:41:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-07-06 15:41:28,471 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 22 [2021-07-06 15:41:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:41:28,472 INFO L442 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-07-06 15:41:28,472 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 15:41:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-07-06 15:41:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-06 15:41:28,473 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:41:28,473 INFO L525 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:41:28,473 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-06 15:41:28,473 INFO L374 AbstractCegarLoop]: === Iteration 3 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:41:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:41:28,473 INFO L82 PathProgramCache]: Analyzing trace with hash -229915676, now seen corresponding path program 1 times [2021-07-06 15:41:28,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:41:28,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603587917] [2021-07-06 15:41:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:41:28,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:41:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:41:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-06 15:41:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 15:41:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:41:28,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:41:28,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:41:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-06 15:41:28,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:41:28,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603587917] [2021-07-06 15:41:28,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603587917] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:41:28,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:41:28,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:41:28,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259562292] [2021-07-06 15:41:28,495 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:41:28,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:41:28,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:41:28,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:41:28,496 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 15:41:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:41:28,502 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-07-06 15:41:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:41:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-07-06 15:41:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:41:28,503 INFO L225 Difference]: With dead ends: 19 [2021-07-06 15:41:28,503 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:41:28,503 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:41:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:41:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:41:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:41:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:41:28,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-07-06 15:41:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:41:28,504 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:41:28,504 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 15:41:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:41:28,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:41:28,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:41:28,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:41:28,511 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:41:28,511 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:41:28,511 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:41:28,511 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:41:28,511 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:41:28,511 INFO L762 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-07-06 15:41:28,511 INFO L765 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2021-07-06 15:41:28,511 INFO L762 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-07-06 15:41:28,511 INFO L762 garLoopResultBuilder]: For program point L13(lines 13 19) no Hoare annotation was computed. [2021-07-06 15:41:28,512 INFO L762 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2021-07-06 15:41:28,512 INFO L762 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2021-07-06 15:41:28,512 INFO L765 garLoopResultBuilder]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2021-07-06 15:41:28,512 INFO L762 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,512 INFO L762 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,512 INFO L762 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-07-06 15:41:28,512 INFO L765 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2021-07-06 15:41:28,512 INFO L762 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-07-06 15:41:28,512 INFO L762 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,513 INFO L762 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,513 INFO L762 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2021-07-06 15:41:28,513 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-06 15:41:28,513 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:41:28,513 INFO L303 ceAbstractionStarter]: Result for error location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (2/2) [2021-07-06 15:41:28,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 03:41:28 BoogieIcfgContainer [2021-07-06 15:41:28,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 15:41:28,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 15:41:28,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 15:41:28,516 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 15:41:28,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:41:27" (3/4) ... [2021-07-06 15:41:28,518 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 15:41:28,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2021-07-06 15:41:28,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-07-06 15:41:28,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-06 15:41:28,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 15:41:28,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 15:41:28,542 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 15:41:28,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 15:41:28,543 INFO L168 Benchmark]: Toolchain (without parser) took 1843.31 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 45.4 MB in the beginning and 41.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-07-06 15:41:28,543 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 65.0 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:41:28,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.55 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 36.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 15:41:28,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.88 ms. Allocated memory is still 65.0 MB. Free memory was 36.0 MB in the beginning and 49.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-06 15:41:28,543 INFO L168 Benchmark]: Boogie Preprocessor took 37.91 ms. Allocated memory is still 65.0 MB. Free memory was 49.3 MB in the beginning and 48.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:41:28,543 INFO L168 Benchmark]: RCFGBuilder took 243.72 ms. Allocated memory is still 65.0 MB. Free memory was 48.2 MB in the beginning and 36.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 15:41:28,544 INFO L168 Benchmark]: TraceAbstraction took 1337.45 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 35.7 MB in the beginning and 44.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 15:41:28,544 INFO L168 Benchmark]: Witness Printer took 26.04 ms. Allocated memory is still 81.8 MB. Free memory was 44.1 MB in the beginning and 41.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:41:28,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 65.0 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 157.55 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 36.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.88 ms. Allocated memory is still 65.0 MB. Free memory was 36.0 MB in the beginning and 49.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.91 ms. Allocated memory is still 65.0 MB. Free memory was 49.3 MB in the beginning and 48.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 243.72 ms. Allocated memory is still 65.0 MB. Free memory was 48.2 MB in the beginning and 36.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1337.45 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 35.7 MB in the beginning and 44.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 26.04 ms. Allocated memory is still 81.8 MB. Free memory was 44.1 MB in the beginning and 41.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 2 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1132.4ms, OverallIterations: 4, TraceHistogramMax: 5, EmptinessCheckTime: 7.6ms, AutomataDifference: 161.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 8.6ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56 SDtfs, 8 SDslu, 125 SDs, 0 SdLazy, 65 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.5ms AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.6ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 24.6ms SsaConstructionTime, 80.9ms SatisfiabilityAnalysisTime, 455.2ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 185 SizeOfPredicates, 1 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 83/91 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 2 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 162.0ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 3.6ms, AutomataDifference: 36.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6.3ms, InitialAbstractionConstructionTime: 0.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 2 SDslu, 76 SDs, 0 SdLazy, 34 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.0ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.3ms SsaConstructionTime, 27.4ms SatisfiabilityAnalysisTime, 64.1ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 95 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 34/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-07-06 15:41:28,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...