./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/MultCommutative-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf 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/termination-numeric/MultCommutative-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash f536dfaa325c5623e8e0c5d03d4d9d96bd998e26 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:22:17,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:22:17,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:22:17,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:22:17,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:22:18,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:22:18,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:22:18,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:22:18,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:22:18,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:22:18,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:22:18,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:22:18,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:22:18,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:22:18,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:22:18,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:22:18,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:22:18,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:22:18,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:22:18,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:22:18,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:22:18,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:22:18,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:22:18,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:22:18,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:22:18,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:22:18,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:22:18,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:22:18,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:22:18,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:22:18,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:22:18,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:22:18,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:22:18,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:22:18,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:22:18,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:22:18,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:22:18,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:22:18,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:22:18,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:22:18,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:22:18,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-30 22:22:18,080 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:22:18,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:22:18,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:22:18,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:22:18,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:22:18,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:22:18,083 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:22:18,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:22:18,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:22:18,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:22:18,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:22:18,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:22:18,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:22:18,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:22:18,085 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:22:18,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:22:18,085 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:22:18,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:22:18,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:22:18,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:22:18,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:22:18,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:22:18,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:22:18,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:22:18,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:22:18,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:22:18,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:22:18,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:22:18,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:22:18,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f536dfaa325c5623e8e0c5d03d4d9d96bd998e26 [2021-08-30 22:22:18,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:22:18,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:22:18,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:22:18,335 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:22:18,336 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:22:18,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2021-08-30 22:22:18,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81432b0f9/16e774474a4741609821ca50e79ce66c/FLAG0d725959a [2021-08-30 22:22:18,701 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:22:18,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2021-08-30 22:22:18,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81432b0f9/16e774474a4741609821ca50e79ce66c/FLAG0d725959a [2021-08-30 22:22:18,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81432b0f9/16e774474a4741609821ca50e79ce66c [2021-08-30 22:22:18,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:22:18,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:22:18,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:22:18,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:22:18,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:22:18,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbf45f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18, skipping insertion in model container [2021-08-30 22:22:18,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:22:18,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:22:18,854 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c[1008,1021] [2021-08-30 22:22:18,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:22:18,860 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:22:18,869 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c[1008,1021] [2021-08-30 22:22:18,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:22:18,878 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:22:18,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18 WrapperNode [2021-08-30 22:22:18,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:22:18,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:22:18,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:22:18,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:22:18,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:22:18,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:22:18,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:22:18,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:22:18,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:22:18,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:22:18,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:22:18,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:22:18,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (1/1) ... [2021-08-30 22:22:18,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:22:18,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:22:19,022 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) [2021-08-30 22:22:19,073 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 [2021-08-30 22:22:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2021-08-30 22:22:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2021-08-30 22:22:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:22:19,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:22:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 22:22:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 22:22:19,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:22:19,232 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 22:22:19,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:22:19 BoogieIcfgContainer [2021-08-30 22:22:19,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:22:19,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:22:19,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:22:19,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:22:19,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:22:18" (1/3) ... [2021-08-30 22:22:19,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7fcdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:22:19, skipping insertion in model container [2021-08-30 22:22:19,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:18" (2/3) ... [2021-08-30 22:22:19,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7fcdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:22:19, skipping insertion in model container [2021-08-30 22:22:19,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:22:19" (3/3) ... [2021-08-30 22:22:19,239 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2021-08-30 22:22:19,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:22:19,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-30 22:22:19,270 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:22:19,274 INFO L339 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, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 22:22:19,275 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-30 22:22:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-30 22:22:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-30 22:22:19,287 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:19,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:19,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:19,291 INFO L82 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2021-08-30 22:22:19,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:19,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396575805] [2021-08-30 22:22:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:19,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:19,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:19,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396575805] [2021-08-30 22:22:19,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396575805] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:22:19,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:22:19,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 22:22:19,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176559068] [2021-08-30 22:22:19,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 22:22:19,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:19,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 22:22:19,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:22:19,532 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:22:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:19,702 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2021-08-30 22:22:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:22:19,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-30 22:22:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:19,709 INFO L225 Difference]: With dead ends: 81 [2021-08-30 22:22:19,718 INFO L226 Difference]: Without dead ends: 43 [2021-08-30 22:22:19,720 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.88ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:22:19,722 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.38ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:19,723 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 22 Invalid, 130 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 135.38ms Time] [2021-08-30 22:22:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-30 22:22:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-08-30 22:22:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-30 22:22:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-08-30 22:22:19,762 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2021-08-30 22:22:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:19,763 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-08-30 22:22:19,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:22:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-08-30 22:22:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 22:22:19,764 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:19,765 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:19,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:22:19,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:19,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1971768732, now seen corresponding path program 1 times [2021-08-30 22:22:19,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:19,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903495924] [2021-08-30 22:22:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:19,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:19,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:19,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903495924] [2021-08-30 22:22:19,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903495924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:22:19,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:22:19,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 22:22:19,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530432531] [2021-08-30 22:22:19,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 22:22:19,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:19,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 22:22:19,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:22:19,841 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:22:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:19,945 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2021-08-30 22:22:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:22:19,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-30 22:22:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:19,946 INFO L225 Difference]: With dead ends: 59 [2021-08-30 22:22:19,946 INFO L226 Difference]: Without dead ends: 57 [2021-08-30 22:22:19,947 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.55ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:22:19,948 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.37ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.87ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:19,948 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 17 Invalid, 108 Unknown, 0 Unchecked, 1.37ms Time], IncrementalHoareTripleChecker [11 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 86.87ms Time] [2021-08-30 22:22:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-30 22:22:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2021-08-30 22:22:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-30 22:22:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2021-08-30 22:22:19,959 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2021-08-30 22:22:19,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:19,959 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2021-08-30 22:22:19,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:22:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2021-08-30 22:22:19,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 22:22:19,960 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:19,960 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:19,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 22:22:19,961 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:19,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:19,961 INFO L82 PathProgramCache]: Analyzing trace with hash -323955617, now seen corresponding path program 1 times [2021-08-30 22:22:19,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:19,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650709889] [2021-08-30 22:22:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:19,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:19,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:19,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650709889] [2021-08-30 22:22:19,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650709889] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:22:19,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:22:19,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 22:22:19,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735961660] [2021-08-30 22:22:19,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 22:22:19,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 22:22:19,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:22:19,997 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:22:20,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:20,067 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-08-30 22:22:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:22:20,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-30 22:22:20,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:20,069 INFO L225 Difference]: With dead ends: 77 [2021-08-30 22:22:20,069 INFO L226 Difference]: Without dead ends: 76 [2021-08-30 22:22:20,069 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.63ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-30 22:22:20,070 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.09ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:20,071 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 15 Invalid, 97 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 53.09ms Time] [2021-08-30 22:22:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-08-30 22:22:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-08-30 22:22:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-30 22:22:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2021-08-30 22:22:20,080 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2021-08-30 22:22:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:20,080 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2021-08-30 22:22:20,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:22:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2021-08-30 22:22:20,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 22:22:20,081 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:20,081 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:20,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 22:22:20,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:20,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1630133947, now seen corresponding path program 1 times [2021-08-30 22:22:20,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:20,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528200748] [2021-08-30 22:22:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:20,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 22:22:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:20,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:20,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528200748] [2021-08-30 22:22:20,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528200748] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:22:20,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:22:20,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 22:22:20,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952806108] [2021-08-30 22:22:20,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 22:22:20,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 22:22:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:22:20,119 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:22:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:20,199 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2021-08-30 22:22:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:22:20,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 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 15 [2021-08-30 22:22:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:20,201 INFO L225 Difference]: With dead ends: 121 [2021-08-30 22:22:20,202 INFO L226 Difference]: Without dead ends: 85 [2021-08-30 22:22:20,202 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.63ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:22:20,203 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.11ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:20,203 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 25 Invalid, 114 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 67.11ms Time] [2021-08-30 22:22:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-08-30 22:22:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2021-08-30 22:22:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 22:22:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2021-08-30 22:22:20,227 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2021-08-30 22:22:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:20,228 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2021-08-30 22:22:20,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:22:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2021-08-30 22:22:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 22:22:20,229 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:20,229 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:20,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 22:22:20,229 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:20,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:20,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1005448143, now seen corresponding path program 1 times [2021-08-30 22:22:20,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:20,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169114994] [2021-08-30 22:22:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:20,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 22:22:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:20,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:20,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169114994] [2021-08-30 22:22:20,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169114994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:22:20,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:22:20,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 22:22:20,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265517597] [2021-08-30 22:22:20,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 22:22:20,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 22:22:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:22:20,310 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:22:20,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:20,418 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2021-08-30 22:22:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:22:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 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 16 [2021-08-30 22:22:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:20,420 INFO L225 Difference]: With dead ends: 102 [2021-08-30 22:22:20,420 INFO L226 Difference]: Without dead ends: 101 [2021-08-30 22:22:20,420 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.29ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:22:20,421 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.98ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:20,422 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 26 Invalid, 133 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 83.98ms Time] [2021-08-30 22:22:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-08-30 22:22:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2021-08-30 22:22:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-08-30 22:22:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2021-08-30 22:22:20,431 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2021-08-30 22:22:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:20,431 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2021-08-30 22:22:20,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:22:20,432 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2021-08-30 22:22:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 22:22:20,432 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:20,433 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:20,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 22:22:20,433 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:20,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:20,434 INFO L82 PathProgramCache]: Analyzing trace with hash -385899469, now seen corresponding path program 1 times [2021-08-30 22:22:20,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:20,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289235936] [2021-08-30 22:22:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:20,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 22:22:20,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:20,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289235936] [2021-08-30 22:22:20,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289235936] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:22:20,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:22:20,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 22:22:20,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823222448] [2021-08-30 22:22:20,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 22:22:20,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 22:22:20,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:22:20,472 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:22:20,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:20,529 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2021-08-30 22:22:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 22:22:20,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-30 22:22:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:20,530 INFO L225 Difference]: With dead ends: 133 [2021-08-30 22:22:20,530 INFO L226 Difference]: Without dead ends: 59 [2021-08-30 22:22:20,531 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.52ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-30 22:22:20,532 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.43ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:20,532 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 43.43ms Time] [2021-08-30 22:22:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-30 22:22:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2021-08-30 22:22:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 22:22:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2021-08-30 22:22:20,537 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2021-08-30 22:22:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:20,538 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2021-08-30 22:22:20,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:22:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-08-30 22:22:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 22:22:20,538 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:20,538 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:20,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 22:22:20,539 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2021-08-30 22:22:20,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:20,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755274332] [2021-08-30 22:22:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:20,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 22:22:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:20,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:20,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755274332] [2021-08-30 22:22:20,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755274332] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:22:20,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641349858] [2021-08-30 22:22:20,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:20,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:22:20,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:22:20,600 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) [2021-08-30 22:22:20,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 22:22:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:20,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 22:22:20,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:22:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:20,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:22:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:20,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641349858] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:22:20,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:22:20,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2021-08-30 22:22:20,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566473849] [2021-08-30 22:22:20,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 22:22:20,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 22:22:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-30 22:22:20,795 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 22:22:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:20,880 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-08-30 22:22:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 22:22:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2021-08-30 22:22:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:20,882 INFO L225 Difference]: With dead ends: 67 [2021-08-30 22:22:20,882 INFO L226 Difference]: Without dead ends: 66 [2021-08-30 22:22:20,882 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 52.49ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-08-30 22:22:20,883 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.79ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:20,883 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 19 Invalid, 150 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [10 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 57.79ms Time] [2021-08-30 22:22:20,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-30 22:22:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2021-08-30 22:22:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-08-30 22:22:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2021-08-30 22:22:20,888 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2021-08-30 22:22:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:20,888 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2021-08-30 22:22:20,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 22:22:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2021-08-30 22:22:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 22:22:20,889 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:20,889 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:20,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 22:22:21,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:22:21,107 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:21,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2021-08-30 22:22:21,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:21,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071750424] [2021-08-30 22:22:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:21,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 22:22:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:21,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:21,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071750424] [2021-08-30 22:22:21,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071750424] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:22:21,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586696160] [2021-08-30 22:22:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:21,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:22:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:22:21,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:22:21,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 22:22:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:21,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 22:22:21,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:22:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:21,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:22:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:22:21,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586696160] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:22:21,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:22:21,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2021-08-30 22:22:21,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048051527] [2021-08-30 22:22:21,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 22:22:21,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 22:22:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-30 22:22:21,333 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 22:22:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:21,417 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2021-08-30 22:22:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 22:22:21,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 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 19 [2021-08-30 22:22:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:21,419 INFO L225 Difference]: With dead ends: 65 [2021-08-30 22:22:21,419 INFO L226 Difference]: Without dead ends: 64 [2021-08-30 22:22:21,419 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.42ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-30 22:22:21,420 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.81ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:21,420 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 16 Invalid, 129 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [10 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 55.81ms Time] [2021-08-30 22:22:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-30 22:22:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-08-30 22:22:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-08-30 22:22:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2021-08-30 22:22:21,424 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2021-08-30 22:22:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:21,425 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2021-08-30 22:22:21,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 22:22:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2021-08-30 22:22:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 22:22:21,425 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:21,426 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:21,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 22:22:21,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-08-30 22:22:21,660 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:21,661 INFO L82 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2021-08-30 22:22:21,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:21,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716946129] [2021-08-30 22:22:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:21,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 22:22:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-08-30 22:22:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 22:22:21,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:21,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716946129] [2021-08-30 22:22:21,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716946129] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:22:21,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868343160] [2021-08-30 22:22:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:21,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:22:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:22:21,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:22:21,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 22:22:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:21,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 22:22:21,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:22:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 22:22:21,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:22:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 22:22:21,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868343160] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:22:21,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:22:21,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2021-08-30 22:22:21,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550068282] [2021-08-30 22:22:21,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 22:22:21,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 22:22:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-08-30 22:22:21,989 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 22:22:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:22,107 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2021-08-30 22:22:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 22:22:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-08-30 22:22:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:22,108 INFO L225 Difference]: With dead ends: 94 [2021-08-30 22:22:22,108 INFO L226 Difference]: Without dead ends: 93 [2021-08-30 22:22:22,109 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 74.79ms TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-08-30 22:22:22,110 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 40 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.89ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:22,111 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 12 Invalid, 221 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [13 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 73.89ms Time] [2021-08-30 22:22:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-30 22:22:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2021-08-30 22:22:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-08-30 22:22:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2021-08-30 22:22:22,141 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2021-08-30 22:22:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:22,142 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2021-08-30 22:22:22,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 22:22:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2021-08-30 22:22:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 22:22:22,143 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:22,143 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:22,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 22:22:22,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:22:22,343 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:22,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2021-08-30 22:22:22,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:22,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963319690] [2021-08-30 22:22:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:22,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 22:22:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-08-30 22:22:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 22:22:22,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:22:22,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963319690] [2021-08-30 22:22:22,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963319690] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:22:22,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124927840] [2021-08-30 22:22:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:22,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:22:22,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:22:22,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:22:22,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 22:22:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:22:22,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 22:22:22,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:22:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-30 22:22:22,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:22:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-30 22:22:22,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124927840] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:22:22,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:22:22,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2021-08-30 22:22:22,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280185402] [2021-08-30 22:22:22,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 22:22:22,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:22:22,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 22:22:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-30 22:22:22,595 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 22:22:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:22:22,697 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2021-08-30 22:22:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 22:22:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2021-08-30 22:22:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:22:22,698 INFO L225 Difference]: With dead ends: 97 [2021-08-30 22:22:22,698 INFO L226 Difference]: Without dead ends: 64 [2021-08-30 22:22:22,699 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.47ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-30 22:22:22,699 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.34ms IncrementalHoareTripleChecker+Time [2021-08-30 22:22:22,699 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 30 Invalid, 179 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [9 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 70.34ms Time] [2021-08-30 22:22:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-30 22:22:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2021-08-30 22:22:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-08-30 22:22:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-08-30 22:22:22,703 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2021-08-30 22:22:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:22:22,703 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-08-30 22:22:22,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 22:22:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-08-30 22:22:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 22:22:22,704 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:22,704 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:22:22,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 22:22:22,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:22:22,925 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:22:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:22,925 INFO L82 PathProgramCache]: Analyzing trace with hash 360381511, now seen corresponding path program 1 times [2021-08-30 22:22:22,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:22,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319254140] [2021-08-30 22:22:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:22,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 22:22:22,934 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 22:22:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 22:22:22,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 22:22:22,951 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 22:22:22,951 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-08-30 22:22:22,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-08-30 22:22:22,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-08-30 22:22:22,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-08-30 22:22:22,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-08-30 22:22:22,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-08-30 22:22:22,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 22:22:22,957 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 22:22:22,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:22:22 BoogieIcfgContainer [2021-08-30 22:22:22,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 22:22:22,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 22:22:22,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 22:22:22,977 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 22:22:22,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:22:19" (3/4) ... [2021-08-30 22:22:22,978 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 22:22:23,002 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 22:22:23,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 22:22:23,003 INFO L158 Benchmark]: Toolchain (without parser) took 4281.52ms. Allocated memory was 52.4MB in the beginning and 86.0MB in the end (delta: 33.6MB). Free memory was 29.8MB in the beginning and 28.5MB in the end (delta: 1.4MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2021-08-30 22:22:23,003 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 34.0MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:22:23,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.26ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.7MB in the beginning and 50.7MB in the end (delta: -21.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-08-30 22:22:23,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.24ms. Allocated memory is still 71.3MB. Free memory was 50.7MB in the beginning and 54.9MB in the end (delta: -4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:22:23,004 INFO L158 Benchmark]: Boogie Preprocessor took 25.15ms. Allocated memory is still 71.3MB. Free memory was 54.9MB in the beginning and 54.0MB in the end (delta: 838.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:22:23,004 INFO L158 Benchmark]: RCFGBuilder took 274.72ms. Allocated memory is still 71.3MB. Free memory was 53.8MB in the beginning and 44.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 22:22:23,004 INFO L158 Benchmark]: TraceAbstraction took 3741.91ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 44.4MB in the beginning and 31.1MB in the end (delta: 13.3MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2021-08-30 22:22:23,005 INFO L158 Benchmark]: Witness Printer took 26.00ms. Allocated memory is still 86.0MB. Free memory was 31.1MB in the beginning and 28.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:22:23,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 34.0MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.26ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.7MB in the beginning and 50.7MB in the end (delta: -21.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.24ms. Allocated memory is still 71.3MB. Free memory was 50.7MB in the beginning and 54.9MB in the end (delta: -4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.15ms. Allocated memory is still 71.3MB. Free memory was 54.9MB in the beginning and 54.0MB in the end (delta: 838.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 274.72ms. Allocated memory is still 71.3MB. Free memory was 53.8MB in the beginning and 44.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3741.91ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 44.4MB in the beginning and 31.1MB in the end (delta: 13.3MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 26.00ms. Allocated memory is still 86.0MB. Free memory was 31.1MB in the beginning and 28.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L28] int m = __VERIFIER_nondet_int(); [L29] COND FALSE !(m < 0) [L32] int n = __VERIFIER_nondet_int(); [L33] COND FALSE !(n < 0) [L36] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L21] COND TRUE m == 0 [L22] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L24] EXPR n + mult(n, m - 1) [L24] return n + mult(n, m - 1); [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L24] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3687.00ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 10.65ms, AutomataDifference: 1072.45ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.27ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 334 SdHoareTripleChecker+Valid, 727.69ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 313 mSDsluCounter, 200 SdHoareTripleChecker+Invalid, 524.64ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 648 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1252 IncrementalHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 66 mSDtfsCounter, 1252 mSolverCounterSat, 11.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 329.66ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 124.99ms AutomataMinimizationTime, 10 MinimizatonAttempts, 84 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 56.05ms SsaConstructionTime, 147.30ms SatisfiabilityAnalysisTime, 992.91ms InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 SizeOfPredicates, 8 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 44/98 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-30 22:22:23,031 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...