./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Collatz_bounded.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a31fd051 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-crafted/Collatz_bounded.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 fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:51:05,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:51:05,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:51:05,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:51:05,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:51:05,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:51:05,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:51:05,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:51:05,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:51:05,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:51:05,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:51:05,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:51:05,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:51:05,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:51:05,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:51:05,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:51:05,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:51:05,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:51:05,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:51:05,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:51:05,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:51:05,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:51:05,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:51:05,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:51:05,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:51:05,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:51:05,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:51:05,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:51:05,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:51:05,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:51:05,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:51:05,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:51:05,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:51:05,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:51:05,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:51:05,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:51:05,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:51:05,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:51:05,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:51:05,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:51:05,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:51:05,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 13:51:06,021 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:51:06,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:51:06,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:51:06,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:51:06,023 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:51:06,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:51:06,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:51:06,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:51:06,024 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:51:06,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:51:06,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:51:06,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:51:06,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:51:06,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 13:51:06,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:51:06,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 13:51:06,026 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 13:51:06,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 13:51:06,026 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:51:06,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 13:51:06,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:51:06,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:51:06,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:51:06,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:51:06,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:51:06,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:51:06,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 13:51:06,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:51:06,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:51:06,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:51:06,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 13:51:06,028 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:51:06,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:51:06,029 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:51:06,029 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef [2023-02-15 13:51:06,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:51:06,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:51:06,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:51:06,241 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:51:06,241 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:51:06,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2023-02-15 13:51:07,235 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:51:07,348 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:51:07,349 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2023-02-15 13:51:07,353 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f5321c7/8373532da220425382b364f7fea63c09/FLAG76877a509 [2023-02-15 13:51:07,362 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f5321c7/8373532da220425382b364f7fea63c09 [2023-02-15 13:51:07,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:51:07,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:51:07,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:51:07,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:51:07,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:51:07,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509963a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07, skipping insertion in model container [2023-02-15 13:51:07,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:51:07,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:51:07,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:51:07,494 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:51:07,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:51:07,515 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:51:07,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07 WrapperNode [2023-02-15 13:51:07,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:51:07,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:51:07,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:51:07,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:51:07,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,537 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2023-02-15 13:51:07,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:51:07,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:51:07,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:51:07,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:51:07,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:51:07,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:51:07,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:51:07,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:51:07,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (1/1) ... [2023-02-15 13:51:07,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:51:07,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:51:07,586 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) [2023-02-15 13:51:07,609 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 [2023-02-15 13:51:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:51:07,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:51:07,647 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:51:07,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:51:07,767 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:51:07,772 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:51:07,772 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 13:51:07,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:51:07 BoogieIcfgContainer [2023-02-15 13:51:07,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:51:07,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:51:07,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:51:07,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:51:07,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:51:07" (1/3) ... [2023-02-15 13:51:07,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35de3155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:51:07, skipping insertion in model container [2023-02-15 13:51:07,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:07" (2/3) ... [2023-02-15 13:51:07,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35de3155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:51:07, skipping insertion in model container [2023-02-15 13:51:07,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:51:07" (3/3) ... [2023-02-15 13:51:07,779 INFO L112 eAbstractionObserver]: Analyzing ICFG Collatz_bounded.c [2023-02-15 13:51:07,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:51:07,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-15 13:51:07,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:51:07,851 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1efe9eb0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:51:07,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-15 13:51:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:51:07,872 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:07,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:51:07,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash 889575245, now seen corresponding path program 1 times [2023-02-15 13:51:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:07,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474867690] [2023-02-15 13:51:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:07,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:08,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:51:08,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474867690] [2023-02-15 13:51:08,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474867690] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:51:08,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:51:08,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:51:08,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603086130] [2023-02-15 13:51:08,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:51:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:51:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:51:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:51:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:51:08,172 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:51:08,224 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-02-15 13:51:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:51:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 13:51:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:51:08,232 INFO L225 Difference]: With dead ends: 29 [2023-02-15 13:51:08,233 INFO L226 Difference]: Without dead ends: 15 [2023-02-15 13:51:08,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:51:08,239 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:51:08,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 13 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:51:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-15 13:51:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-02-15 13:51:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-15 13:51:08,264 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2023-02-15 13:51:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:51:08,265 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-15 13:51:08,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-15 13:51:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 13:51:08,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:08,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:51:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 13:51:08,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1807028872, now seen corresponding path program 1 times [2023-02-15 13:51:08,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:08,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158138166] [2023-02-15 13:51:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:51:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158138166] [2023-02-15 13:51:08,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158138166] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:51:08,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:51:08,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:51:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166329751] [2023-02-15 13:51:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:51:08,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:51:08,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:51:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:51:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:51:08,378 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:51:08,443 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-02-15 13:51:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 13:51:08,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 13:51:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:51:08,445 INFO L225 Difference]: With dead ends: 26 [2023-02-15 13:51:08,445 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 13:51:08,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:51:08,446 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:51:08,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:51:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 13:51:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-02-15 13:51:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-15 13:51:08,450 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2023-02-15 13:51:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:51:08,450 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-15 13:51:08,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-15 13:51:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 13:51:08,451 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:08,451 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:51:08,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 13:51:08,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:08,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:08,452 INFO L85 PathProgramCache]: Analyzing trace with hash -329570987, now seen corresponding path program 1 times [2023-02-15 13:51:08,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:08,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679831341] [2023-02-15 13:51:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:08,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:51:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679831341] [2023-02-15 13:51:08,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679831341] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:51:08,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937725125] [2023-02-15 13:51:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:08,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:08,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:51:08,536 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) [2023-02-15 13:51:08,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 13:51:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:08,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 13:51:08,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:51:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:08,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:51:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:08,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937725125] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:51:08,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:51:08,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 3] total 7 [2023-02-15 13:51:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138849218] [2023-02-15 13:51:08,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:51:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:51:08,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:51:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:51:08,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:51:08,686 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:51:08,773 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2023-02-15 13:51:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:51:08,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-15 13:51:08,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:51:08,776 INFO L225 Difference]: With dead ends: 41 [2023-02-15 13:51:08,776 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 13:51:08,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:51:08,777 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:51:08,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 5 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:51:08,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 13:51:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2023-02-15 13:51:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-02-15 13:51:08,782 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 13 [2023-02-15 13:51:08,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:51:08,782 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-02-15 13:51:08,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-02-15 13:51:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 13:51:08,783 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:08,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2023-02-15 13:51:08,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 13:51:08,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:08,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1695105448, now seen corresponding path program 1 times [2023-02-15 13:51:08,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:08,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975125494] [2023-02-15 13:51:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:51:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975125494] [2023-02-15 13:51:09,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975125494] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:51:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275948262] [2023-02-15 13:51:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:09,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:09,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:51:09,063 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) [2023-02-15 13:51:09,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 13:51:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:09,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 13:51:09,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:51:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:09,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:51:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:09,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275948262] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:51:09,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:51:09,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-15 13:51:09,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447743074] [2023-02-15 13:51:09,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:51:09,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:51:09,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:51:09,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:51:09,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:51:09,142 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:51:09,231 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-02-15 13:51:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 13:51:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-15 13:51:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:51:09,232 INFO L225 Difference]: With dead ends: 60 [2023-02-15 13:51:09,232 INFO L226 Difference]: Without dead ends: 58 [2023-02-15 13:51:09,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:51:09,233 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:51:09,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 5 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:51:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-15 13:51:09,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-02-15 13:51:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 57 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-15 13:51:09,239 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 19 [2023-02-15 13:51:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:51:09,239 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-15 13:51:09,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-15 13:51:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 13:51:09,241 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:09,241 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1] [2023-02-15 13:51:09,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 13:51:09,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-15 13:51:09,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:09,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash 115805276, now seen corresponding path program 2 times [2023-02-15 13:51:09,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:09,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162232851] [2023-02-15 13:51:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:09,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:09,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:51:09,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162232851] [2023-02-15 13:51:09,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162232851] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:51:09,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746632313] [2023-02-15 13:51:09,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:51:09,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:09,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:51:09,561 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) [2023-02-15 13:51:09,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 13:51:09,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:51:09,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:51:09,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 13:51:09,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:51:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:09,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:51:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:09,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746632313] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:51:09,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:51:09,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-15 13:51:09,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096301622] [2023-02-15 13:51:09,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:51:09,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 13:51:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:51:09,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 13:51:09,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:51:09,756 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:51:09,913 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2023-02-15 13:51:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 13:51:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-02-15 13:51:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:51:09,915 INFO L225 Difference]: With dead ends: 123 [2023-02-15 13:51:09,915 INFO L226 Difference]: Without dead ends: 122 [2023-02-15 13:51:09,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:51:09,916 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:51:09,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 8 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:51:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-02-15 13:51:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2023-02-15 13:51:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1495327102803738) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2023-02-15 13:51:09,924 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 43 [2023-02-15 13:51:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:51:09,924 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2023-02-15 13:51:09,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2023-02-15 13:51:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-15 13:51:09,926 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:09,926 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1] [2023-02-15 13:51:09,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 13:51:10,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:10,130 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:10,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1222262986, now seen corresponding path program 3 times [2023-02-15 13:51:10,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:10,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876881163] [2023-02-15 13:51:10,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:10,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-02-15 13:51:10,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:51:10,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876881163] [2023-02-15 13:51:10,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876881163] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:51:10,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981862004] [2023-02-15 13:51:10,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:51:10,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:10,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:51:10,447 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) [2023-02-15 13:51:10,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 13:51:10,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-15 13:51:10,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:51:10,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 13:51:10,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:51:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-02-15 13:51:10,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:51:10,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981862004] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:51:10,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 13:51:10,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-02-15 13:51:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162337836] [2023-02-15 13:51:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:51:10,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:51:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:51:10,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:51:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:51:10,519 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:10,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:51:10,554 INFO L93 Difference]: Finished difference Result 211 states and 243 transitions. [2023-02-15 13:51:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 13:51:10,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-02-15 13:51:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:51:10,555 INFO L225 Difference]: With dead ends: 211 [2023-02-15 13:51:10,555 INFO L226 Difference]: Without dead ends: 118 [2023-02-15 13:51:10,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:51:10,556 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:51:10,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:51:10,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-15 13:51:10,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2023-02-15 13:51:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 99 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2023-02-15 13:51:10,565 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 55 [2023-02-15 13:51:10,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:51:10,565 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2023-02-15 13:51:10,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2023-02-15 13:51:10,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-15 13:51:10,567 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:10,567 INFO L195 NwaCegarLoop]: trace histogram [19, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2023-02-15 13:51:10,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 13:51:10,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:10,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:10,771 INFO L85 PathProgramCache]: Analyzing trace with hash 588137744, now seen corresponding path program 1 times [2023-02-15 13:51:10,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:10,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350097817] [2023-02-15 13:51:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:10,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 17 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:51:12,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350097817] [2023-02-15 13:51:12,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350097817] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:51:12,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436218048] [2023-02-15 13:51:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:12,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:12,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:51:12,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:51:12,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 13:51:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:12,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 13:51:12,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:51:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 17 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:12,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:51:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 34 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:13,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436218048] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:51:13,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:51:13,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 29, 20] total 80 [2023-02-15 13:51:13,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521412067] [2023-02-15 13:51:13,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:51:13,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-02-15 13:51:13,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:51:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-02-15 13:51:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2667, Invalid=3813, Unknown=0, NotChecked=0, Total=6480 [2023-02-15 13:51:13,360 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 81 states, 80 states have (on average 3.3625) internal successors, (269), 81 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:51:14,309 INFO L93 Difference]: Finished difference Result 886 states and 1010 transitions. [2023-02-15 13:51:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-02-15 13:51:14,310 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 3.3625) internal successors, (269), 81 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-02-15 13:51:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:51:14,315 INFO L225 Difference]: With dead ends: 886 [2023-02-15 13:51:14,315 INFO L226 Difference]: Without dead ends: 885 [2023-02-15 13:51:14,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5415 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4423, Invalid=6707, Unknown=0, NotChecked=0, Total=11130 [2023-02-15 13:51:14,318 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 352 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 13:51:14,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 12 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 13:51:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-02-15 13:51:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 258. [2023-02-15 13:51:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.132295719844358) internal successors, (291), 257 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 291 transitions. [2023-02-15 13:51:14,353 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 291 transitions. Word has length 97 [2023-02-15 13:51:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:51:14,354 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 291 transitions. [2023-02-15 13:51:14,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 3.3625) internal successors, (269), 81 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 291 transitions. [2023-02-15 13:51:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-02-15 13:51:14,363 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:14,363 INFO L195 NwaCegarLoop]: trace histogram [41, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1] [2023-02-15 13:51:14,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 13:51:14,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:14,570 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash 581456054, now seen corresponding path program 2 times [2023-02-15 13:51:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:14,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285743607] [2023-02-15 13:51:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:51:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 39 proven. 2781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:19,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:51:19,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285743607] [2023-02-15 13:51:19,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285743607] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:51:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270313703] [2023-02-15 13:51:19,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:51:19,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:19,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:51:19,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:51:19,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 13:51:19,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:51:19,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:51:19,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 62 conjunts are in the unsatisfiable core [2023-02-15 13:51:19,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:51:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 39 proven. 2781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:21,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:51:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 78 proven. 2742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:51:22,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270313703] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:51:22,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:51:22,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 62, 42] total 179 [2023-02-15 13:51:22,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371876684] [2023-02-15 13:51:22,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:51:22,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2023-02-15 13:51:22,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:51:22,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2023-02-15 13:51:22,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12087, Invalid=20133, Unknown=0, NotChecked=0, Total=32220 [2023-02-15 13:51:22,578 INFO L87 Difference]: Start difference. First operand 258 states and 291 transitions. Second operand has 180 states, 179 states have (on average 3.346368715083799) internal successors, (599), 180 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:27,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:51:27,693 INFO L93 Difference]: Finished difference Result 6158 states and 6966 transitions. [2023-02-15 13:51:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-02-15 13:51:27,693 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 179 states have (on average 3.346368715083799) internal successors, (599), 180 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-02-15 13:51:27,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:51:27,707 INFO L225 Difference]: With dead ends: 6158 [2023-02-15 13:51:27,708 INFO L226 Difference]: Without dead ends: 6157 [2023-02-15 13:51:27,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 314 SyntacticMatches, 2 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44316 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=29616, Invalid=57114, Unknown=0, NotChecked=0, Total=86730 [2023-02-15 13:51:27,717 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 691 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 13:51:27,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 9 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 13:51:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2023-02-15 13:51:27,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 484. [2023-02-15 13:51:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.1221532091097308) internal successors, (542), 483 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 542 transitions. [2023-02-15 13:51:27,765 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 542 transitions. Word has length 207 [2023-02-15 13:51:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:51:27,765 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 542 transitions. [2023-02-15 13:51:27,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 179 states have (on average 3.346368715083799) internal successors, (599), 180 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:51:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 542 transitions. [2023-02-15 13:51:27,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-02-15 13:51:27,767 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:51:27,767 INFO L195 NwaCegarLoop]: trace histogram [45, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1] [2023-02-15 13:51:27,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-15 13:51:27,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:51:27,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 13:51:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:51:27,973 INFO L85 PathProgramCache]: Analyzing trace with hash -839031398, now seen corresponding path program 3 times [2023-02-15 13:51:27,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:51:27,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673228281] [2023-02-15 13:51:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:51:27,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:51:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 66 proven. 3344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:29,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673228281] [2023-02-15 13:52:29,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673228281] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:29,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820431348] [2023-02-15 13:52:29,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:52:29,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:29,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:29,012 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:52:29,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process